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Kimemia BB, Musila L, Langat S, Odoyo E, Cinkovich S, Abuom D, Yalwala S, Khamadi S, Johnson J, Garges E, Ojwang E, Eyase F. Detection of pathogenic bacteria in ticks from Isiolo and Kwale counties of Kenya using metagenomics. PLoS One 2024; 19:e0296597. [PMID: 38687700 PMCID: PMC11060535 DOI: 10.1371/journal.pone.0296597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 04/09/2024] [Indexed: 05/02/2024] Open
Abstract
Ticks are arachnid ectoparasites that rank second only to mosquitoes in the transmission of human diseases including bacteria responsible for anaplasmosis, ehrlichiosis, spotted fevers, and Lyme disease among other febrile illnesses. Due to the paucity of data on bacteria transmitted by ticks in Kenya, this study undertook a bacterial metagenomic-based characterization of ticks collected from Isiolo, a semi-arid pastoralist County in Eastern Kenya, and Kwale, a coastal County with a monsoon climate in the southern Kenyan border with Tanzania. A total of 2,918 ticks belonging to 3 genera and 10 species were pooled and screened in this study. Tick identification was confirmed through the sequencing of the Cytochrome C Oxidase Subunit 1 (COI) gene. Bacterial 16S rRNA gene PCR amplicons obtained from the above samples were sequenced using the MinION (Oxford Nanopore Technologies) platform. The resulting reads were demultiplexed in Porechop, followed by trimming and filtering in Trimmomatic before clustering using Qiime2-VSearch. A SILVA database pretrained naïve Bayes classifier was used to classify the Operational Taxonomic Units (OTUs) taxonomically. The bacteria of clinical interest detected in pooled tick assays were as follows: Rickettsia spp. 59.43% of pools, Coxiella burnetii 37.88%, Proteus mirabilis 5.08%, Cutibacterium acnes 6.08%, and Corynebacterium ulcerans 2.43%. These bacteria are responsible for spotted fevers, query fever (Q-fever), urinary tract infections, skin and soft tissue infections, eye infections, and diphtheria-like infections in humans, respectively. P. mirabilis, C. acnes, and C. ulcerans were detected only in Isiolo. Additionally, COI sequences allowed for the identification of Rickettsia and Coxiella species to strain levels in some of the pools. Diversity analysis revealed that the tick genera had high levels of Alpha diversity but the differences between the microbiomes of the three tick genera studied were not significant. The detection of C. acnes, commonly associated with human skin flora suggests that the ticks may have contact with humans potentially exposing them to bacterial infections. The findings in this study highlight the need for further investigation into the viability of these bacteria and the competency of ticks to transmit them. Clinicians in these high-risk areas also need to be appraised for them to include Rickettsial diseases and Q-fever as part of their differential diagnosis.
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Affiliation(s)
- Bryson Brian Kimemia
- Department of Emerging Infectious Diseases, United States Army Medical Research Directorate-Africa (USAMRD-A), Nairobi, Kenya
- Jomo Kenyatta University of Agriculture and Technology (JKUAT), Nairobi, Kenya
| | - Lillian Musila
- Department of Emerging Infectious Diseases, United States Army Medical Research Directorate-Africa (USAMRD-A), Nairobi, Kenya
- Kenya Medical Research Institute (KEMRI), Centre for Microbiology Research, Nairobi, Kenya
| | - Solomon Langat
- Kenya Medical Research Institute (KEMRI), Centre for Virus Research, Nairobi, Kenya
| | - Erick Odoyo
- Department of Emerging Infectious Diseases, United States Army Medical Research Directorate-Africa (USAMRD-A), Nairobi, Kenya
| | - Stephanie Cinkovich
- United States Armed Forces Health Surveillance Division, Global Emerging Infections Surveillance Branch, Silver Spring, Maryland, United States of America
| | - David Abuom
- Department of Emerging Infectious Diseases, United States Army Medical Research Directorate-Africa (USAMRD-A), Nairobi, Kenya
| | - Santos Yalwala
- Department of Emerging Infectious Diseases, United States Army Medical Research Directorate-Africa (USAMRD-A), Nairobi, Kenya
| | - Samoel Khamadi
- Kenya Medical Research Institute (KEMRI), Centre for Virus Research, Nairobi, Kenya
| | - Jaree Johnson
- United States Armed Forces Pest Management Board, Silver Spring, Maryland, United States of America
| | - Eric Garges
- Department of Emerging Infectious Diseases, United States Army Medical Research Directorate-Africa (USAMRD-A), Nairobi, Kenya
| | - Elly Ojwang
- Department of Emerging Infectious Diseases, United States Army Medical Research Directorate-Africa (USAMRD-A), Nairobi, Kenya
| | - Fredrick Eyase
- Department of Emerging Infectious Diseases, United States Army Medical Research Directorate-Africa (USAMRD-A), Nairobi, Kenya
- Kenya Medical Research Institute (KEMRI), Centre for Virus Research, Nairobi, Kenya
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Alkenani NA, Baroom HM, Almohimeed AA, Hassan SO, Mohammed MS, Alshehri LA, Alshehri SA, Abu Sulayman SM, Al-Maaqar SM, Alshaeri MA. Serological investigation of Coxiella burnetii infection (Query fever) in livestock in Makkah Province, Saudi Arabia. Vet World 2024; 17:842-847. [PMID: 38798290 PMCID: PMC11111712 DOI: 10.14202/vetworld.2024.842-847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Accepted: 03/26/2024] [Indexed: 05/29/2024] Open
Abstract
Background and Aim Query fever (Q fever) is an endemic zoonotic disease and ruminants are considered to be the primary source of infection in humans. It is caused by Coxiella burnetii which is an obligate intracellular bacterial pathogen with a worldwide distribution. This study estimated the prevalence of Q fever in livestock with a history of abortion in Makkah Province, Saudi Arabia. Material and Methods Sera from 341 camels, 326 sheep, and 121 goats of either sex from various locations (Makkah, Jeddah, AL-Taif, AL-Qunfudah, AL-Laith, and AL-Kamil) were examined using a Q fever indirect enzyme-linked immunosorbent assay. Results Among the 788 serum samples, 356 animals had anti-Coxiella burnetii immunoglobulin G antibodies with an overall seroprevalence of 45.4%. Significant differences were observed in seroprevalence between species and locations. Camels had the highest percentage of Q fever-positive sera, with a prevalence of 50.4%, followed by goats (44.6%) and sheep (36.8%), with a high significant difference between animals (p = 0.000). The prevalence was significantly higher in Makkah (65.4%) than in Jeddah (28.8%). Conclusion C. burnetii infection is prevalent in agricultural animals, especially camels maintained at livestock farms in Makkah province. Therefore, these animals considered as the main source of Q fever infections in Saudi Arabia, which is also a reason for the abortion in these animals. Therefore, there is an urgent need for further studies on Q fever infection with interventional approaches for prevention and control.
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Affiliation(s)
- Naser A. Alkenani
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, P.O. Box: 80203, Jeddah, 21589, Saudi Arabia
- Environmental Protection and Sustainability Research Group, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hassan M. Baroom
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, P.O. Box: 80203, Jeddah, 21589, Saudi Arabia
- Department of Microbiology, Faculty of Science, Umm Alqura University, Makkah, Saudi Arabia
| | - Adi A. Almohimeed
- Department of Microbiology, Jeddah Islamic Port Veterinary Diagnostic Laboratory, Ministry of Agriculture, Jeddah, Saudi Arabia
| | - Salaheldin O. Hassan
- Department of Microbiology, Jeddah Islamic Port Veterinary Diagnostic Laboratory, Ministry of Agriculture, Jeddah, Saudi Arabia
| | - Mohammed S. Mohammed
- Department of Parasitology, Jeddah Islamic Port Veterinary Diagnostic Laboratory, Ministry of Agriculture, Jeddah, Saudi Arabia
| | - Layla A. Alshehri
- Department of Parasitology, Jeddah Islamic Port Veterinary Diagnostic Laboratory, Ministry of Agriculture, Jeddah, Saudi Arabia
| | - S. A. Alshehri
- Department of Microbiology, Jeddah Islamic Port Veterinary Diagnostic Laboratory, Ministry of Agriculture, Jeddah, Saudi Arabia
| | - Sulaiman M. Abu Sulayman
- Department of Microbiology, Jeddah Islamic Port Veterinary Diagnostic Laboratory, Ministry of Agriculture, Jeddah, Saudi Arabia
| | - Saleh M. Al-Maaqar
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, P.O. Box: 80203, Jeddah, 21589, Saudi Arabia
- Faculty of Education, Department of Biology, Albaydha University, Al-Baydha, Yemen
| | - Majed A. Alshaeri
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, P.O. Box: 80203, Jeddah, 21589, Saudi Arabia
- Environmental Protection and Sustainability Research Group, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
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Lilak AA, Pecor DB, Matulis G, Potter AM, Wofford RN, Kearney MF, Mitchell S, Jaradat F, Kano A, Zimmerman DM, Hassell JM, Kumsa B, Kamau M, Linton YM, von Fricken ME. Data release: targeted systematic literature search for tick and tick-borne pathogen distributions in six countries in sub-Saharan Africa from 1901 to 2020. Parasit Vectors 2024; 17:84. [PMID: 38389097 PMCID: PMC10885379 DOI: 10.1186/s13071-023-06086-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 12/07/2023] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND Surveillance data documenting tick and tick-borne disease (TBD) prevalence is needed to develop risk assessments and implement control strategies. Despite extensive research in Africa, there is no standardized, comprehensive review. METHODS Here we tackle this knowledge gap, by producing a comprehensive review of research articles on ticks and TBD between 1901 and 2020 in Chad, Djibouti, Ethiopia, Kenya, Tanzania, and Uganda. Over 8356 English language articles were recovered. Our search strategy included 19 related MeSH terms. Articles were reviewed, and 331 met inclusion criteria. Articles containing mappable data were compiled into a standardized data schema, georeferenced, and uploaded to VectorMap. RESULTS Tick and pathogen matrixes were created, providing information on vector distributions and tick-pathogen associations within the six selected African countries. CONCLUSIONS These results provide a digital, mappable database of current and historical tick and TBD distributions across six countries in Africa, which can inform specific risk modeling, determine surveillance gaps, and guide future surveillance priorities.
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Affiliation(s)
- Abigail A Lilak
- One Health Center of Excellence, Emerging Pathogens Institute, University of Florida, 2055 Mowry Road, Gainesville, FL, 32611, USA
- Department of Environmental & Global Health, University of Florida, Gainesville, FL, USA
| | - David B Pecor
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Museum Support Center, Suitland, MD, USA
- Department of Entomology, Smithsonian Institution-National Museum of Natural History, Washington, DC, USA
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, Maryland, USA
| | - Graham Matulis
- One Health Center of Excellence, Emerging Pathogens Institute, University of Florida, 2055 Mowry Road, Gainesville, FL, 32611, USA
- Department of Environmental & Global Health, University of Florida, Gainesville, FL, USA
| | - Alexander M Potter
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Museum Support Center, Suitland, MD, USA
- Department of Entomology, Smithsonian Institution-National Museum of Natural History, Washington, DC, USA
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, Maryland, USA
| | | | | | - Stephanie Mitchell
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Museum Support Center, Suitland, MD, USA
| | | | - Arisa Kano
- George Mason University, Fairfax, VA, USA
| | - Dawn M Zimmerman
- Department of Entomology, Smithsonian Institution-National Museum of Natural History, Washington, DC, USA
- Yale University, New Haven, CT, USA
| | - James M Hassell
- Department of Entomology, Smithsonian Institution-National Museum of Natural History, Washington, DC, USA
- Yale University, New Haven, CT, USA
| | - Bersissa Kumsa
- Department of Pathology & Parasitology, College of Veterinary Medicine and Agriculture, Addis Ababa University, Bishoftu, Ethiopia
| | - Maureen Kamau
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Museum Support Center, Suitland, MD, USA
- Mpala Research Center, Nanyuki, Kenya
| | - Yvonne-Marie Linton
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Museum Support Center, Suitland, MD, USA
- Department of Entomology, Smithsonian Institution-National Museum of Natural History, Washington, DC, USA
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, Maryland, USA
| | - Michael E von Fricken
- One Health Center of Excellence, Emerging Pathogens Institute, University of Florida, 2055 Mowry Road, Gainesville, FL, 32611, USA.
- Department of Environmental & Global Health, University of Florida, Gainesville, FL, USA.
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Robi DT, Demissie W, Bogale A, Temteme S, Aleme M, Urge B. Epidemiological investigation of Coxiella burnetii in cattle and its association with Ixodid tick infestation in different agro-ecological zones of Southwest Ethiopia. Res Vet Sci 2023; 164:105015. [PMID: 37708827 DOI: 10.1016/j.rvsc.2023.105015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 09/16/2023]
Abstract
Coxiella burnetii is a serious zoonotic disease that causes significant economic losses in cattle production, including abortion, stillbirth, infertility, and reduced milk yield. However, little is known about the epidemiology of C. burnetii in Ethiopia. From November 2020 to November 2021, a cross-sectional study was conducted to estimate the seroprevalence and associated risk factors of C. burnetii in cattle in various agro-ecologies of Southwest Ethiopia. Blood samples were collected from 461 cattle, and the serum samples were tested for the presence of C. burnetii antibodies using an indirect ELISA. To identify potential risk factors for C. burnetii seropositivity, a multivariable mixed-effect logistic regression analysis was used. The study found an overall seroprevalence of 8.68% (95% CI: 6.11-11.25) and 13.57% (95% CI: 9.56-17.58) at the animal and herd levels, respectively, in the study areas. The results of the study indicated that C. burnetii infection was a widespread disease in the study areas. C. burnetii seropositivity at the animal level was significantly associated with age (OR = 4.1, 95%CI: 1.47-10.92), herd size (OR = 3.9, 95%CI: 1.21-12.66), management system (OR = 9.7, 95%CI: 1.27-27.25), cattle access to dogs, cats, and mice (OR = 2.5, 95%CI: 1.21-5.28), accessibility of cattle to wild animals (OR = 4.2, 95%CI: 1.01-17.18), presence of ticks on cattle (OR = 2.3, 95%CI: 1.12-4.83), and history of abortion (OR = 3.8, 95%CI: 1.78-8.23). A herd level analysis identified several risk factors for C. burnetii infection, including the management system (OR = 3.8, 95%CI: 1.59-8.98), agro-ecology (OR = 2.8, 95%CI: 1.43-7.21), herd size (OR = 4.3, 95%CI: 1.69-9.76), and accessibility of cattle to dogs, cats, and mice (OR = 2.6, 95%CI: 1.18-3.96). Therefore, it is important to implement appropriate control methods and raise public awareness about C. burnetii zoonotic transmission. Moreover, further studies should be conducted to isolate and characterize C. burnetii as a cause of reproductive problems and in disease reservoirs such as ticks and wildlife in the study areas.
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Affiliation(s)
- Dereje Tulu Robi
- Ethiopian Institute of Agricultural Research, Tepi Agricultural Research Center, P.O Box, 34, Tepi, Ethiopia.
| | - Wondimagegn Demissie
- Jimma University College of Agriculture and Veterinary Medicine School of Veterinary Medicine, P.O. Box 307, Jimma, Ethiopia
| | - Ararsa Bogale
- Ethiopian Institute of Agricultural Research, Tepi Agricultural Research Center, P.O Box, 34, Tepi, Ethiopia
| | - Shiferaw Temteme
- Ethiopian Institute of Agricultural Research, Tepi Agricultural Research Center, P.O Box, 34, Tepi, Ethiopia
| | - Melkam Aleme
- Ethiopian Institute of Agricultural Research, Tepi Agricultural Research Center, P.O Box, 34, Tepi, Ethiopia
| | - Beksisa Urge
- Ethiopian Institute of Agricultural Research, Holeta Agricultural Research Center, P.O. Box 2003, Holeta, Ethiopia
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Mucheka VT, Pillay A, Mukaratirwa S. Prevalence of tick-borne pathogens in Rhipicephalus species infesting domestic animals in Africa: A systematic review and meta-analysis. Acta Trop 2023; 246:106994. [PMID: 37516420 DOI: 10.1016/j.actatropica.2023.106994] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 07/31/2023]
Abstract
Rhipicephalus ticks transmit important tick-borne pathogens (TBPs) such as Anaplasma, Babesia, and Theileria spp. which cause major economic losses in livestock production and contribute to emerging zoonotic diseases. A vast amount of data is available based on the demonstration of these pathogens in various host tissues, with limited information on the prevalence of these TBPs and their vectors. Quantifying TBPs infection rates among Rhipicephalus spp. is essential for the effective control and management of TBDs in domestic animals and surveillance of emerging diseases in humans, as they have close social associations. This review summarizes the prevalence of TBPs in Rhipicephalus spp. from domestic animals of Africa. A thorough search was done in SCOPUS, Web of Knowledge, PubMed, Google Scholar, and library sources from 2000 to 2022. All research in Africa reporting TBPs infection rates in Rhipicephalus spp. were included in the selection criteria. The meta-analysis evaluated publication bias using funnel plots to analyze the observed heterogeneity and applied a quality effects model. Prevalence estimates were based on data from 46 studies reporting TBPs infection rates in Rhipicephalus spp. from northern and sub-Saharan Africa. Sub-group analysis was done by geographic region and tick genus. A total of 12,368 Rhipicephalus spp. collected from domestic animals in Africa were used in the meta-analysis. The quality effects model revealed a high degree of heterogeneity among studies on the various TBPs. The overall prevalence of detected TBPs such as Theileria spp. was 8% (95% CI: 3-15%), Rickettsia spp. 3% (95% CI: 0-9%), Ehrlichia spp. 7% (95% CI: 2-14%), Anaplasma spp. 8% (95% CI: 2-16%), Coxiella spp. 10% (95% CI: 1-26%) and Babesia spp. 6% (95% CI: 2-12%). Northern Africa had the highest prevalence of Anaplasma spp. 12% (95% CI: 3-25%) and Theileria spp. 16% (95% CI: 0-42%). Whilst West Africa had the highest prevalence for Ehrlichia spp. 12% (95% CI: 3-24%) and eastern Africa for Rickettsia spp. 8% (95% CI: 4-12%). This is a systematic and quantitative investigation of the various TBPs detected in Rhipicephalus tick vectors from domestic animal hosts in Africa. The findings demonstrate considerable species variation across the African continent and offer preliminary estimates of infection rates for the continent.
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Affiliation(s)
- Vimbai Tendai Mucheka
- School of Life Sciences, Biological Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Westville Campus, Durban 4001, South Africa
| | - Alicia Pillay
- School of Life Sciences, Biological Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Westville Campus, Durban 4001, South Africa.
| | - Samson Mukaratirwa
- School of Life Sciences, Biological Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Westville Campus, Durban 4001, South Africa; One Health Centre for Zoonoses and Tropical Veterinary Medicine, Ross University School of Veterinary Medicine, Basseterre, St. Kitts, West Indies
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Muhammad KA, Gadzama UN, Onyiche TE. Distribution and Prevalence of Coxiella burnetii in Animals, Humans, and Ticks in Nigeria: A Systematic Review. Infect Dis Rep 2023; 15:576-588. [PMID: 37888137 PMCID: PMC10606657 DOI: 10.3390/idr15050056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/24/2023] [Accepted: 09/26/2023] [Indexed: 10/28/2023] Open
Abstract
'Query' (Q) fever is a neglected but emerging or re-emerging zoonotic disease caused by the bacterium Coxiella (C.) burnetii. Several host species are considered or speculated to be the primary reservoir hosts for human infection. In the past, several research groups in Nigeria have evaluated the prevalence of C. burnetii in various vertebrate and invertebrate hosts. Currently, there is a paucity of knowledge regarding the epidemiology of the pathogen in Nigeria with limited or no attention to control and prevention programs. Therefore, this review was undertaken to comprehend the current situation of C. burnetii infection in human, domestic and peri-domestic animals, and some tick species in Nigeria since 1960 with the aim to help identify future research priorities for the country. A comprehensive literature search was performed using the PRISMA guidelines on five scientific databases including Google Scholar, PubMed, AJOL, Science Direct, and Scopus for articles published from Nigeria dealing with the screening of blood, milk, or tick DNA for evidence of C. burnetii using any standard diagnostic approach. Of the 33 published articles subjected to full-text evaluation, more than 48% of the articles met the inclusion criteria and were thus included in this review. We observed different ranges of prevalence for C. burnetii antibodies from four vertebrate hosts including cattle (2.5-23.5%), sheep (3.8-12.0%), goats (3.1-10.9%), and humans (12.0-61.3%). Additionally, the use of molecular diagnostics revealed that the DNA of C. burnetii has been amplified in eight tick species including Hyalomma (Hy) dromedarii, Hy. truncatum, Hy. impeltatum, Hy. rufipes, Hy. impressum, Amblyomma (Am.) variegatum, Rhipicephalus (Rh.) evertsi evertsi, and Rh. annulatus. Two rodent's species (Rattus rattus and Rattus norvegicus) in Nigeria were documented to show evidence of the bacterium with the detection of the DNA of C. burnetii in these two mammals. In conclusion, this review has provided more insight on the prevalence of C. burnetii and its associated host/vector in Nigeria. Domestic animals, peri-domestic animals, and ticks species harbor C. burnetii and could be a source of human infections. Due to the paucity of studies from southern Nigeria, we recommend that research groups with interest on vector-borne diseases need to consider more epidemiological studies in the future on C. burnetii prevalence in diverse hosts to help unravel their distribution and vector potentials in Nigeria as a whole.
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Affiliation(s)
- Kaka A. Muhammad
- Department of Biological Sciences, University of Maiduguri, P. M. B. 1069, Maiduguri 600230, Nigeria; (K.A.M.); (U.N.G.)
| | - Usman N. Gadzama
- Department of Biological Sciences, University of Maiduguri, P. M. B. 1069, Maiduguri 600230, Nigeria; (K.A.M.); (U.N.G.)
| | - ThankGod E. Onyiche
- Department of Veterinary Parasitology and Entomology, University of Maiduguri, P. M. B. 1069, Maiduguri 600230, Nigeria
- Department of Biological and Environmental Sciences, Faculty of Natural Sciences, Walter Sisulu University, PBX1, Mthatha 5117, South Africa
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Robi DT, Demissie W, Temteme S. Coxiellosis in Livestock: Epidemiology, Public Health Significance, and Prevalence of Coxiella burnetii Infection in Ethiopia. VETERINARY MEDICINE (AUCKLAND, N.Z.) 2023; 14:145-158. [PMID: 37614223 PMCID: PMC10443632 DOI: 10.2147/vmrr.s418346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 08/14/2023] [Indexed: 08/25/2023]
Abstract
Coxiellosis is a zoonotic disease that is prevalent globally and can pose significant challenges, especially in less developed countries like Ethiopia. Coxiella burnetii is responsible for causing an infection called Q fever in humans and coxiellosis in ruminants. Pneumonia and endocarditis are the only signs that characterize the acute and chronic forms of Q fever, respectively. Ruminants exhibit symptoms such as abortion during the later stages of pregnancy, impaired fertility, perinatal death, premature delivery, and reduced birth weight. C. burnetii infection typically spreads among healthy cattle via tick bites and exposure to infected cattle or their bodily secretions. The primary source of human infection is through the ingestion of contaminated milk and milk products, but transmission through aerosols and dust generated during livestock operations is also common. Cattle, sheep, camels and goats are the primary sources of human infection, and the bacterium can be found in various bodily fluids of infected animals. Several factors, including host characteristics, environmental conditions, and management practices, can potentially affect the occurrence of C. burnetii infection in livestock, such as cattle, camels, sheep, and goats. Coxiellosis is prevalent in Ethiopia's pastoral and mixed cattle management systems, as individuals frequently interact with cattle and are therefore more prone to exposure to the C. burnetii bacterium. Vaccination and biosecurity measures are effective techniques for managing C. burnetii infection. Therefore, it is crucial to implement appropriate mitigation strategies, raise awareness about the spread of C. burnetii infection, and conduct further studies on C. burnetii infection in high-risk groups.
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Affiliation(s)
- Dereje Tulu Robi
- Ethiopian Institute of Agricultural Research, Tepi Agricultural Research Center, Tepi, Ethiopia
| | - Wondimagegn Demissie
- Jimma University College of Agriculture and Veterinary Medicine School of Veterinary Medicine, Jimma, Ethiopia
| | - Shiferaw Temteme
- Ethiopian Institute of Agricultural Research, Tepi Agricultural Research Center, Tepi, Ethiopia
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Sadiki V, Gcebe N, Mangena ML, Ngoshe YB, Adesiyun AA. Prevalence and risk factors of Q fever ( Coxiella burnetii) in cattle on farms of Limpopo province, South Africa. Front Vet Sci 2023; 10:1101988. [PMID: 37180062 PMCID: PMC10169714 DOI: 10.3389/fvets.2023.1101988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 03/30/2023] [Indexed: 05/15/2023] Open
Abstract
Q fever in animals and humans and its economic and public health significance has been widely reported worldwide but in South Africa. There are few studies on the prevalence of this zoonosis and its associated risk factors in South African livestock. Therefore, a cross-sectional study was conducted to determine the seroprevalence, molecular prevalence, and risk factors associated with C. burnetii in cattle on farms in South Africa's Limpopo province. Out of 383 cattle tested for antibodies, the overall seroprevalence was 24.28%. Herd size of >150 (OR: 9.88; 95%CI: 3.92-24.89; p < 0.01) remained associated with C. burnetii seropositivity in cattle. For PCR detection, targeting IS1111 fragment, cattle with no abortion history (OR: 0.37; 95%CI: 0.18-0.77; p < 0.01) and herd size of >150 (OR: 3.52; 95%CI: 1.34-9.24; p < 0.01) remained associated with C. burnetii positivity. The molecular prevalence in sheath scrapings and vaginal swabs by IS1111 PCR was 15.67%. Cohen's kappa agreement test revealed a fair agreement between the PCR and ELISA results (k = 0.40). Sequence analysis revealed that the amplicons had similarities to the C. burnetii transposase gene fragment, confirming the presence of the pathogen. The higher seroprevalence than molecular prevalence indicated a past C. burnetii infection, no bacterial shedding through vaginal mucus in cows, or preputial discharge in bulls. Similarly, the detection of C. burnetii by PCR in the absence of antibodies could be partly explained by recent infections in which antibodies have not yet been produced against the bacteria, or the level of these antibodies was below the detectability threshold. The presence of the pathogen in cattle and the evidence of exposure, as shown by both PCR and ELISA suggests an active circulation of the pathogen. This study demonstrated that C. burnetii is widespread in the study area and that a herd size of >150 is associated with C. burnetii seroprevalence and molecular prevalence.
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Affiliation(s)
- Vhahangwele Sadiki
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
- Agricultural Research Council–Bacteriology and Zoonotic Diseases Diagnostic Laboratory, Onderstepoort Veterinary Research, Pretoria, South Africa
| | - Nomakorinte Gcebe
- Agricultural Research Council–Bacteriology and Zoonotic Diseases Diagnostic Laboratory, Onderstepoort Veterinary Research, Pretoria, South Africa
| | - Maruping L. Mangena
- Agricultural Research Council–Transboundary Animal Diseases Programme, Onderstepoort Veterinary Research, Onderstepoort, South Africa
| | - Yusuf B. Ngoshe
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Abiodun A. Adesiyun
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
- Faculty of Medical Sciences, School of Veterinary Medicine, University of the West Indies, St. Augustine, Trinidad and Tobago
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9
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Distribution and Prevalence of Anaplasmataceae, Rickettsiaceae and Coxiellaceae in African Ticks: A Systematic Review and Meta-Analysis. Microorganisms 2023; 11:microorganisms11030714. [PMID: 36985288 PMCID: PMC10051480 DOI: 10.3390/microorganisms11030714] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
In Africa, ticks continue to be a major hindrance to the improvement of the livestock industry due to tick-borne pathogens that include Anaplasma, Ehrlichia, Rickettsia and Coxiella species. A systemic review and meta-analysis were conducted here and highlighted the distribution and prevalence of these tick-borne pathogens in African ticks. Relevant publications were searched in five electronic databases and selected using inclusion/exclusion criteria, resulting in 138 and 78 papers included in the qualitative and quantitative analysis, respectively. Most of the studies focused on Rickettsia africae (38 studies), followed by Ehrlichia ruminantium (27 studies), Coxiella burnetii (20 studies) and Anaplasma marginale (17 studies). A meta-analysis of proportions was performed using the random-effects model. The highest prevalence was obtained for Rickettsia spp. (18.39%; 95% CI: 14.23–22.85%), R. africae (13.47%; 95% CI: 2.76–28.69%), R. conorii (11.28%; 95% CI: 1.77–25.89%), A. marginale (12.75%; 95% CI: 4.06–24.35%), E. ruminantium (6.37%; 95% CI: 3.97–9.16%) and E. canis (4.3%; 95% CI: 0.04–12.66%). The prevalence of C. burnetii was low (0%; 95% CI: 0–0.25%), with higher prevalence for Coxiella spp. (27.02%; 95% CI: 10.83–46.03%) and Coxiella-like endosymbionts (70.47%; 95% CI: 27–99.82%). The effect of the tick genera, tick species, country and other variables were identified and highlighted the epidemiology of Rhipicephalus ticks in the heartwater; affinity of each Rickettsia species for different tick genera; dominant distribution of A. marginale, R. africae and Coxiella-like endosymbionts in ticks and a low distribution of C. burnetii in African hard ticks.
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10
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Coxiella burnetii in Dogs and Cats from Portugal: Serological and Molecular Analysis. Pathogens 2022; 11:pathogens11121525. [PMID: 36558859 PMCID: PMC9787635 DOI: 10.3390/pathogens11121525] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/30/2022] [Accepted: 12/05/2022] [Indexed: 12/15/2022] Open
Abstract
Dogs and cats are potential sources of infection for some zoonotic diseases such as Q fever, caused by Coxiella burnetii, a multiple host pathogen. Q fever outbreaks in dogs and cats have been related with parturition and abortion events, and ticks have a potential role in the transmission of this pathogen. This study aimed to screen for C. burnetii in dogs and cats, and in ticks collected from infested animals. An observational descriptive study was conducted in Portugal at two time points nine years apart, 2012 and 2021. Sera obtained from dogs and cats (total n = 294) were tested for C. burnetii antibodies using a commercial ELISA adapted for multi-species detection. C. burnetii DNA was screened by qPCR assay targeting IS1111 in uterine samples and in ticks. A decrease in the exposure to C. burnetii was observed in cats from 17.2% (95% CI: 5.8−35.8%) in 2012 to 0.0% in 2021, and in dogs from 12.6% (95% CI: 7.7−19.0%) in 2012 to 1.7% (95% CI: 0.3−9.1%) in 2021 (p < 0.05). Overall, and despite differences in the samples, rural habitat seems to favour the exposure to C. burnetii. The DNA of C. burnetii was not detected in ticks. The low seropositivity observed in 2021 and the absence of C. burnetii DNA in the tested samples, suggest that dogs and cats from Portugal are not often exposed to the pathogen. Nevertheless, the monitoring of C. burnetii infection in companion animals is an important tool to prevent human outbreaks, considering the zoonotic potential for owners and veterinarians contacting infected animals, mainly dogs and cats from rural areas which often come into contact with livestock.
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11
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Seroprevalence and Risk Factors for Q fever ( Coxiella burnetii) Exposure in Smallholder Dairy Cattle in Tanzania. Vet Sci 2022; 9:vetsci9120662. [PMID: 36548823 PMCID: PMC9784148 DOI: 10.3390/vetsci9120662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/10/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
Q fever is a zoonotic disease, resulting from infection with Coxiella burnetii. Infection in cattle can cause abortion and infertility, however, there is little epidemiological information regarding the disease in dairy cattle in Tanzania. Between July 2019 and October 2020, a serosurvey was conducted in six high dairy producing regions of Tanzania. Cattle sera were tested for antibodies to C. burnetii using an indirect enzyme-linked immunosorbent assay. A mixed effect logistic regression model identified risk factors associated with C. burnetii seropositivity. A total of 79 out of 2049 dairy cattle tested positive with an overall seroprevalence of 3.9% (95% CI 3.06-4.78) across the six regions with the highest seroprevalence in Tanga region (8.21%, 95% CI 6.0-10.89). Risk factors associated with seropositivity included: extensive feeding management (OR 2.77, 95% CI 1.25-3.77), and low precipitation below 1000 mm (OR 2.76, 95% 1.37-7.21). The disease seroprevalence is relatively low in the high dairy cattle producing regions of Tanzania. Due to the zoonotic potential of the disease, future efforts should employ a "One Health" approach to understand the epidemiology, and for interdisciplinary control to reduce the impacts on animal and human health.
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12
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Seroprevalence Estimates of Q Fever and the Predictors for the Infection in Cattle, Sheep, and Goats in Nandi County, Kenya. Vet Med Int 2022; 2022:3741285. [DOI: 10.1155/2022/3741285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 11/03/2022] [Accepted: 11/04/2022] [Indexed: 11/17/2022] Open
Abstract
Q fever is an important worldwide zoonotic disease that affects almost all domestic animals, wildlife, and humans. The infection has both socio-economic and public health significance. A cross-sectional study was carried out to investigate the estimates of seroprevalence of Q fever and to determine the predictors of the infection in cattle, sheep, and goats in six wards of Nandi County. A total of 1,140 blood samples were collected from 366 households. Samples were drawn from 725 cattle (64%), 283 sheep (25%), and 132 goats (11%). Multistage sampling method was adopted. Serum samples were analyzed for antibodies to Coxiella burnetii using the indirect ELISA test. Results showed an overall animal seroprevalence of 5.614% (64/1140) for Q fever. In cattle, the seroprevalence was 8.138% (59/725) with CI 95% (2.8–18.23), 1.413% (4/283) for sheep CI 95% (1.0–7.78), and 0.758% (1/132) goats CI 95% (0.14–7.27). From the findings, Q fever was more prevalent in cattle (OR 7.26) than in sheep and goats. Animal species (
value 0.015, CI 95% OR 7.26) was the only potential predictors in the three considered species for the presence of Coxiella burnetii antibodies. Sex, age, breed, and production system had no statistical significant association for Q fever infection since
value was >0.005. In conclusion, the results demonstrated that cattle, sheep, and goats are widely exposed to Q fever organisms, and hence, it is an important zoonosis in Nandi County. Therefore, to address this “silent” disease, there is an urgent call for both veterinarians and medical personnel to jointly address prevention and control strategy through enhanced surveillance, public sensitization, and awareness creation under the one health concept. There is also a need for enhanced capacity for the diagnosis of Q fever in both animals and humans in Nandi County.
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13
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Muema J, Nyamai M, Wheelhouse N, Njuguna J, Jost C, Oyugi J, Bukania Z, Oboge H, Ogoti B, Makori A, Fernandez MDP, Omulo S, Thumbi S. Endemicity of Coxiella burnetii infection among people and their livestock in pastoral communities in northern Kenya. Heliyon 2022; 8:e11133. [PMID: 36303929 PMCID: PMC9593183 DOI: 10.1016/j.heliyon.2022.e11133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 07/26/2022] [Accepted: 10/13/2022] [Indexed: 11/06/2022] Open
Abstract
Background Coxiella burnetti can be transmitted to humans primarily through inhaling contaminated droplets released from infected animals or consumption of contaminated dairy products. Despite its zoonotic nature and the close association pastoralist communities have with their livestock, studies reporting simultaneous assessment of C. burnetti exposure and risk-factors among people and their livestock are scarce. Objective This study therefore estimated the seroprevalence of Q-fever and associated risk factors of exposure in people and their livestock. Materials and methods We conducted a cross-sectional study in pastoralist communities in Marsabit County in northern Kenya. A total of 1,074 women and 225 children were enrolled and provided blood samples for Q-fever testing. Additionally, 1,876 goats, 322 sheep and 189 camels from the same households were sampled. A structured questionnaire was administered to collect individual- and household/herd-level data. Indirect IgG ELISA kits were used to test the samples. Results Household-level seropositivity was 13.2% [95% CI: 11.2–15.3]; differences in seropositivity levels among women and children were statistically insignificant (p = 0.8531). Lactating women had higher odds of exposure, odds ratio (OR) = 2.4 [1.3–5.3], while the odds of exposure among children increased with age OR = 1.1 [1.0–1.1]. Herd-level seroprevalence was 83.7% [81.7–85.6]. Seropositivity among goats was 74.7% [72.7–76.7], while that among sheep and camels was 56.8% [51.2–62.3] and 38.6% [31.6–45.9], respectively. Goats and sheep had a higher risk of exposure OR = 5.4 [3.7–7.3] and 2.6 [1.8–3.4], respectively relative to camels. There was no statistically significant association between Q-fever seropositivity and nutrition status in women, p = 0.900 and children, p = 1.000. We found no significant association between exposure in people and their livestock at household level (p = 0.724) despite high animal exposure levels, suggesting that Q-fever exposure in humans may be occurring at a scale larger than households. Conclusion The one health approach used in this study revealed that Q-fever is endemic in this setting. Longitudinal studies of Q-fever burden and risk factors simultaneously assessed in human and animal populations as well as the socioeconomic impacts of the disease and further explore the role of environmental factors in Q-fever epidemiology are required. Such evidence may form the basis for designing Q-fever prevention and control strategies.
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Affiliation(s)
- Josphat Muema
- Institute of Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya,Washington State University Global Health Program – Kenya, Nairobi, Kenya,Feed the Future Innovation Lab for Animal Health, Washington State University, USA,Corresponding author.
| | - Mutono Nyamai
- Washington State University Global Health Program – Kenya, Nairobi, Kenya,Feed the Future Innovation Lab for Animal Health, Washington State University, USA,Center for Epidemiological Modelling and Analysis, University of Nairobi, Nairobi, Kenya
| | | | - Joseph Njuguna
- Food and Agriculture Organization of the United Nations, Nairobi, Kenya
| | - Christine Jost
- United States Agency for International Development's Bureau for Humanitarian Assistance (USAID/BHA), Washington, DC, USA,Global Health Support Initiative III, Social Solutions International, Washington DC, USA
| | - Julius Oyugi
- Institute of Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya
| | - Zipporah Bukania
- Center for Public Health Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Harriet Oboge
- Washington State University Global Health Program – Kenya, Nairobi, Kenya,Feed the Future Innovation Lab for Animal Health, Washington State University, USA
| | - Brian Ogoti
- Washington State University Global Health Program – Kenya, Nairobi, Kenya,Center for Epidemiological Modelling and Analysis, University of Nairobi, Nairobi, Kenya
| | - Anita Makori
- Washington State University Global Health Program – Kenya, Nairobi, Kenya,Center for Epidemiological Modelling and Analysis, University of Nairobi, Nairobi, Kenya
| | | | - Sylvia Omulo
- Institute of Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya,Feed the Future Innovation Lab for Animal Health, Washington State University, USA,Paul G. Allen School for Global Health, Washington State University, Pullman, USA
| | - S.M. Thumbi
- Institute of Tropical and Infectious Diseases, University of Nairobi, Nairobi, Kenya,Feed the Future Innovation Lab for Animal Health, Washington State University, USA,Center for Epidemiological Modelling and Analysis, University of Nairobi, Nairobi, Kenya,Paul G. Allen School for Global Health, Washington State University, Pullman, USA,South African Center for Epidemiological Modelling Analysis, South Africa,Institute of Immunology and Infection Research, University of Edinburgh, UK
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14
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Dirbazian A, Soleimani M, Mousavi SH, Aminianfar M, Mirjani R, Khoshfetrat M, Kamali M. Molecular Detection of Infectious Endocarditis (Coxiella burnetii) Bacteria from Selected Military Hospitals. IRANIAN JOURNAL OF MEDICAL MICROBIOLOGY 2022. [DOI: 10.30699/ijmm.16.6.594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Madder M, Day M, Schunack B, Fourie J, Labuschange M, van der Westhuizen W, Johnson S, Githigia SM, Akande FA, Nzalawahe JS, Tayebwa DS, Aschenborn O, Marcondes M, Heylen D. A community approach for pathogens and their arthropod vectors (ticks and fleas) in cats of sub-Saharan Africa. Parasit Vectors 2022; 15:321. [PMID: 36085039 PMCID: PMC9461260 DOI: 10.1186/s13071-022-05436-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 08/13/2022] [Indexed: 11/12/2022] Open
Abstract
Background Arthropod-borne pathogens and their vectors are present throughout Africa. They have been well studied in livestock of sub-Saharan Africa, but poorly studied in companion animals. Given their socioeconomic importance, the African Small Companion Animal Network (AFSCAN), as part of the WSAVA Foundation, initiated a standardized multi-country surveillance study. Methods In six countries (Ghana, Kenya, Nigeria, Tanzania, Uganda, and Namibia) in both rural and urban settings, 160 infested cats were sampled to assess their ectoparasite community (ticks and fleas), as well as the micro-parasite prevalence within those ectoparasites (60 and 118 pools of ticks and fleas, respectively) and blood (276 cats, including 116 non-infested). Results Almost two thirds of all infested cats originated from Tanzania and Kenya. Despite the large macro-geographical variation, no consistent difference was found in ectoparasite diversity and numbers between East and West Africa. Far more flea-infested than tick-infested cats were found. The most dominant ectoparasite was Ctenocephalides felis. Among the ticks, the exophilic Haemaphysalis spp. were the commonest, including species that are not typically linked with companion animals (Haemaphysalis spinulosa and Haemaphysalis elliptica). The most prevalent pathogens found in the blood and fleas were Bartonella henselae and Mycoplasma haemofelis. In the ticks, the dog-associated Hepatozoon canis was most commonly found. A high degree of co-parasitism was found in all countries and habitats. Conclusions Our continent-wide standardized field study highlights the cat’s potential to serve as a reservoir of pathogens that can be transmitted to humans or livestock, especially when cats are expected to become more commonly kept in African villages and towns. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-022-05436-y.
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Affiliation(s)
| | - Michael Day
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, WA, Australia
| | | | | | | | | | - Sherry Johnson
- School of Veterinary Medicine, CBAS, University of Ghana, Accra, Ghana
| | - Samuel Maina Githigia
- Department of Veterinary Pathology, Microbiology & Parasitology, University of Nairobi, Nairobi, Kenya
| | - Foluke Adedayo Akande
- Department of Veterinary Parasitology and Entomology, College of Veterinary Medicine, Federal University of Agriculture, Abeokuta, Nigeria
| | | | - Dickson Stuart Tayebwa
- Research Center for Tropical Diseases and Vector Control, College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - Ortwin Aschenborn
- School of Veterinary Medicine, University of Namibia, Ondekaremba, Namibia
| | | | - Dieter Heylen
- Eco-Epidemiology Group, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.,Interuniversity Institute for Biostatistics and Statistical Bioinformatics, Hasselt University, Diepenbeek, Belgium.,Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA
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16
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Ergunay K, Mutinda M, Bourke B, Justi SA, Caicedo-Quiroga L, Kamau J, Mutura S, Akunda IK, Cook E, Gakuya F, Omondi P, Murray S, Zimmerman D, Linton YM. Metagenomic Investigation of Ticks From Kenyan Wildlife Reveals Diverse Microbial Pathogens and New Country Pathogen Records. Front Microbiol 2022; 13:932224. [PMID: 35847110 PMCID: PMC9283121 DOI: 10.3389/fmicb.2022.932224] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/27/2022] [Indexed: 11/13/2022] Open
Abstract
Focusing on the utility of ticks as xenosurveillance sentinels to expose circulating pathogens in Kenyan drylands, host-feeding ticks collected from wild ungulates [buffaloes, elephants, giraffes, hartebeest, impala, rhinoceros (black and white), zebras (Grévy’s and plains)], carnivores (leopards, lions, spotted hyenas, wild dogs), as well as regular domestic and Boran cattle were screened for pathogens using metagenomics. A total of 75 host-feeding ticks [Rhipicephalus (97.3%) and Amblyomma (2.7%)] collected from 15 vertebrate taxa were sequenced in 46 pools. Fifty-six pathogenic bacterial species were detected in 35 pools analyzed for pathogens and relative abundances of major phyla. The most frequently observed species was Escherichia coli (62.8%), followed by Proteus mirabilis (48.5%) and Coxiella burnetii (45.7%). Francisella tularemia and Jingmen tick virus (JMTV) were detected in 14.2 and 13% of the pools, respectively, in ticks collected from wild animals and cattle. This is one of the first reports of JMTV in Kenya, and phylogenetic reconstruction revealed significant divergence from previously known isolates and related viruses. Eight fungal species with human pathogenicity were detected in 5 pools (10.8%). The vector-borne filarial pathogens (Brugia malayi, Dirofilaria immitis, Loa loa), protozoa (Plasmodium spp., Trypanosoma cruzi), and environmental and water-/food-borne pathogens (Entamoeba histolytica, Encephalitozoon intestinalis, Naegleria fowleri, Schistosoma spp., Toxoplasma gondii, and Trichinella spiralis) were detected. Documented viruses included human mastadenovirus C, Epstein-Barr virus and bovine herpesvirus 5, Trinbago virus, and Guarapuava tymovirus-like virus 1. Our findings confirmed that host-feeding ticks are an efficient sentinel for xenosurveillance and demonstrate clear potential for wildlife-livestock-human pathogen transfer in the Kenyan landscape.
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Affiliation(s)
- Koray Ergunay
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Medical Microbiology, Virology Unit, Faculty of Medicine, Hacettepe University, Ankara, Turkey
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
- *Correspondence: Koray Ergunay,
| | | | - Brian Bourke
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
| | - Silvia A. Justi
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
| | - Laura Caicedo-Quiroga
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
| | - Joseph Kamau
- One Health Centre, Institute of Primate Research (IPR), Nairobi, Kenya
| | - Samson Mutura
- One Health Centre, Institute of Primate Research (IPR), Nairobi, Kenya
| | | | - Elizabeth Cook
- International Livestock Research Institute (ILRI), Nairobi, Kenya
| | - Francis Gakuya
- Wildlife Research and Training Institute (WRTI), Naivasha, Kenya
| | - Patrick Omondi
- Wildlife Research and Training Institute (WRTI), Naivasha, Kenya
| | - Suzan Murray
- Global Health Program, Smithsonian Conservation Biology Unit, Fort Royal, VA, United States
| | - Dawn Zimmerman
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
- Department of Epidemiology of Microbial Disease, Yale School of Public Health, New Haven, CT, United States
| | - Yvonne-Marie Linton
- Walter Reed Biosystematics Unit (WRBU), Smithsonian Institution Museum Support Center, Suitland, MD, United States
- One Health Branch, Walter Reed Army Institute of Research (WRAIR), Silver Spring, MD, United States
- Department of Entomology, Smithsonian Institution, National Museum of Natural History (NMNH), Washington, DC, United States
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17
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Yessinou RE, Katja MS, Heinrich N, Farougou S. Prevalence of Coxiella-infections in ticks - review and meta-analysis. Ticks Tick Borne Dis 2022; 13:101926. [DOI: 10.1016/j.ttbdis.2022.101926] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 01/04/2022] [Accepted: 02/14/2022] [Indexed: 12/20/2022]
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18
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Patra G, Ghosh S, Polley S, Borthakur SK, Choudhary OP, Arya RS. Molecular detection and genetic characterization of Coxiella-like endosymbionts in dogs and ticks infesting dogs in Northeast India. EXPERIMENTAL & APPLIED ACAROLOGY 2022; 86:549-566. [PMID: 35445372 DOI: 10.1007/s10493-022-00711-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
An epidemiological study was performed to determine the role of dogs and ticks infesting dogs in the transmission of Q fever in humans and animals from April 2019 to March 2020 in the northeastern hill states of India. In total, 245 pet and stray dogs irrespective of age or sex were sampled, without specific inclusion or exclusion criteria. In total, 478 ticks belonging to three species were detected, namely Rhipicephalus sanguineus, Rhipicephalus (Boophilus) microplus and Hyalomma anatolicum anatolicum. The DNA extracted from blood and tick samples was assayed for molecular characterization of Coxiella burnetii targeting the 16S rRNA and superoxide dismutase (SOD) genes. Amplified PCR products were purified, cloned and custom sequenced. PCR assay showed 3.3% (8/245) of the dogs were positive for Coxiella-like bacteria. Coxiella-like bacterial DNA was detected in adult fully engorged females of R. sanguineus (7.7%, 13/168), R. (B.) microplus (3.3%, 4/123) and H. anatolicum (1.9%, 1/54). Coxiella-like bacterial DNA lacked in adult male or nymphal stage. The infection rate did not vary significantly between seasons, nor according to sex or age of the host. Six nucleotide sequences of 16S rRNA and SOD genes are discussed.
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Affiliation(s)
- Gautam Patra
- Department of Veterinary Parasitology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), 796015, Selesih, Aizawl, Mizoram, India.
| | - Subhamoy Ghosh
- Department of Veterinary Parasitology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), 796015, Selesih, Aizawl, Mizoram, India
| | - Shamik Polley
- Department of Veterinary Biochemistry, Faculty of Veterinary and Animal Sciences, West Bengal University of Animal and Fishery Sciences, Kolkata, West Bengal, India
| | - Sonjoy Kumar Borthakur
- Department of Veterinary Parasitology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), 796015, Selesih, Aizawl, Mizoram, India
| | - Om Prakash Choudhary
- Department of Veterinary Anatomy and Histology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), Selesih, Aizawl, Mizoram, India
| | - Rahul Singh Arya
- Department of Veterinary Pathology, College of Veterinary Sciences and Animal Husbandry, Central Agricultural University (I), Selesih, Aizawl, Mizoram, India
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Mwololo D, Nthiwa D, Kitala P, Abuom T, Wainaina M, Kairu-Wanyoike S, Lindahl JF, Ontiri E, Bukachi S, Njeru I, Karanja J, Sang R, Grace D, Bett B. Sero-epidemiological survey of Coxiella burnetii in livestock and humans in Tana River and Garissa counties in Kenya. PLoS Negl Trop Dis 2022; 16:e0010214. [PMID: 35239658 PMCID: PMC8923444 DOI: 10.1371/journal.pntd.0010214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 03/15/2022] [Accepted: 01/28/2022] [Indexed: 01/17/2023] Open
Abstract
Background Coxiella burnetii is a widely distributed pathogen, but data on its epidemiology in livestock, and human populations remain scanty, especially in developing countries such as Kenya. We used the One Health approach to estimate the seroprevalance of C. burnetii in cattle, sheep, goats and human populations in Tana River county, and in humans in Garissa county, Kenya. We also identified potential determinants of exposure among these hosts. Methods Data were collected through a cross-sectional study. Serum samples were taken from 2,727 animals (466 cattle, 1,333 goats, and 928 sheep) and 974 humans and screened for Phase I/II IgG antibodies against C. burnetii using enzyme-linked immunosorbent assay (ELISA). Data on potential factors associated with animal and human exposure were collected using a structured questionnaire. Multivariable analyses were performed with households as a random effect to adjust for the within-household correlation of C. burnetii exposure among animals and humans, respectively. Results The overall apparent seroprevalence estimates of C. burnetii in livestock and humans were 12.80% (95% confidence interval [CI]: 11.57–14.11) and 24.44% (95% CI: 21.77–27.26), respectively. In livestock, the seroprevalence differed significantly by species (p < 0.01). The highest seroprevalence estimates were observed in goats (15.22%, 95% CI: 13.34-17.27) and sheep (14.22%, 95% CI: 12.04–16.64) while cattle (3.00%, 95% CI: 1.65–4.99) had the lowest seroprevalence. Herd-level seropositivity of C. burnetii in livestock was not positively associated with human exposure. Multivariable results showed that female animals had higher odds of seropositivity for C. burnetii than males, while for animal age groups, adult animals had higher odds of seropositivity than calves, kids or lambs. For livestock species, both sheep and goats had significantly higher odds of seropositivity than cattle. In human populations, men had a significantly higher odds of testing positive for C. burnetii than women. Conclusions This study provides evidence of livestock and human exposure to C. burnetii which could have serious economic implications on livestock production and impact on human health. These results also highlight the need to establish active surveillance in the study area to reduce the disease burden associated with this pathogen. Q fever caused by Coxiella burnetii is a significant zoonotic disease that affects wildlife, domestic animals and humans. This study determined the prevalence of antibodies to C. burnetii in livestock (cattle, sheep, and goats) and human populations in arid and semi-arid areas of Kenya between December 2013 and February 2014. We also identified potential factors that were associated with exposure among the above-targeted hosts. Results from this study showed considerable exposure in both livestock and human populations. However, human exposure to this pathogen at the household level was not correlated with herd-level seropositivity. Further studies are needed to elucidate the transmission routes of this pathogen among humans.
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Affiliation(s)
- Damaris Mwololo
- Directorate of Veterinary Services, Ministry of Agriculture, Livestock, Fisheries and Cooperatives, Nairobi, Kenya
| | - Daniel Nthiwa
- Department of Biological Sciences, University of Embu, Embu, Kenya
- International Livestock Research Institute, Nairobi, Kenya
- * E-mail:
| | - Philip Kitala
- Department of Public Health, Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Nairobi, Nairobi, Kenya
| | - Tequiero Abuom
- Department of Clinical Medicine, Faculty of Veterinary Medicine, University of Nairobi, Nairobi, Kenya
| | | | - Salome Kairu-Wanyoike
- Department of Veterinary Services, Ministry of Agriculture, Livestock and Fisheries, Nairobi, Kenya
| | - Johanna F. Lindahl
- International Livestock Research Institute, Nairobi, Kenya
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Enoch Ontiri
- International Livestock Research Institute, Nairobi, Kenya
| | - Salome Bukachi
- Institute of Anthropology, University of Nairobi, Nairobi, Kenya
| | - Ian Njeru
- Division of Disease Surveillance and Response, Ministry of Public Health and Sanitation, Kenyatta National Hospital, Nairobi, Kenya
| | - Joan Karanja
- Division of Disease Surveillance and Response, Ministry of Public Health and Sanitation, Kenyatta National Hospital, Nairobi, Kenya
| | | | - Delia Grace
- International Livestock Research Institute, Nairobi, Kenya
- Natural Resources Institute, University of Greenwich, Kent, United Kingdom
| | - Bernard Bett
- International Livestock Research Institute, Nairobi, Kenya
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A community approach of pathogens and their arthropod vectors (ticks and fleas) in dogs of African Sub-Sahara. Parasit Vectors 2021; 14:576. [PMID: 34784947 PMCID: PMC8594167 DOI: 10.1186/s13071-021-05014-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 09/12/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Arthropod-borne pathogens and their vectors are present throughout Africa. They have been well-studied in livestock of sub-Saharan Africa, but poorly in companion animals. Given the socio-economic importance of companion animals, the African Small Companion Animal Network (AFSCAN), as part of the WSAVA Foundation, initiated a standardized multi-country surveillance study. METHODS Macro-geographic variation in ectoparasite (ticks and fleas) and pathogen communities in dogs was assessed through molecular screening of approximately 100 infested dogs in each of six countries (Ghana, Kenya, Nigeria, Tanzania, Uganda and Namibia), both in rural and urban settings. The most important intrinsic and extrinsic risk factors within the subpopulation of infested dogs were evaluated. RESULTS Despite the large macro-geographic variation in the dogs screened, there was no consistent difference between East and West Africa in terms of the diversity and numbers of ticks. The highest and lowest numbers of ticks were found in Nigeria and Namibia, respectively. Most often, there was a higher diversity of ticks in rural habitats than in urban habitats, although the highest diversity was observed in an urban Uganda setting. With the exception of Namibia, more fleas were collected in rural areas. We identified tick species (including Haemaphysalis spinulosa) as well as zoonotic pathogens (Coxiella burnetti, Trypanosoma spp.) that are not classically associated with companion animals. Rhipicephalus sanguineus was the most abundant tick, with a preference for urban areas. Exophilic ticks, such as Haemaphysalis spp., were more often found in rural areas. Several multi-host ticks occurred in urban areas. For R. sanguineus, housing conditions and additional pets were relevant factors in terms of infestation, while for a rural tick species (Haemaphysalis elliptica), free-roaming dogs were more often infested. Tick occurrence was associated to the use of endoparasiticide, but not to the use of ectoparasiticide. The most prevalent tick-borne pathogen was Hepatozoon canis followed by Ehrlichia canis. High levels of co-parasitism were observed in all countries and habitats. CONCLUSIONS As dogs share a common environment with people, they have the potential to extend the network of pathogen transmission to humans. Our study will help epidemiologists to provide recommendations for surveillance and prevention of pathogens in dogs and humans.
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Livestock movement informs the risk of disease spread in traditional production systems in East Africa. Sci Rep 2021; 11:16375. [PMID: 34385539 PMCID: PMC8361167 DOI: 10.1038/s41598-021-95706-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 07/01/2021] [Indexed: 11/22/2022] Open
Abstract
In Africa, livestock are important to local and national economies, but their productivity is constrained by infectious diseases. Comprehensive information on livestock movements and contacts is required to devise appropriate disease control strategies; yet, understanding contact risk in systems where herds mix extensively, and where different pathogens can be transmitted at different spatial and temporal scales, remains a major challenge. We deployed Global Positioning System collars on cattle in 52 herds in a traditional agropastoral system in western Serengeti, Tanzania, to understand fine-scale movements and between-herd contacts, and to identify locations of greatest interaction between herds. We examined contact across spatiotemporal scales relevant to different disease transmission scenarios. Daily cattle movements increased with herd size and rainfall. Generally, contact between herds was greatest away from households, during periods with low rainfall and in locations close to dipping points. We demonstrate how movements and contacts affect the risk of disease spread. For example, transmission risk is relatively sensitive to the survival time of different pathogens in the environment, and less sensitive to transmission distance, at least over the range of the spatiotemporal definitions of contacts that we explored. We identify times and locations of greatest disease transmission potential and that could be targeted through tailored control strategies.
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Getange D, Bargul JL, Kanduma E, Collins M, Bodha B, Denge D, Chiuya T, Githaka N, Younan M, Fèvre EM, Bell-Sakyi L, Villinger J. Ticks and Tick-Borne Pathogens Associated with Dromedary Camels ( Camelus dromedarius) in Northern Kenya. Microorganisms 2021; 9:1414. [PMID: 34209060 PMCID: PMC8306667 DOI: 10.3390/microorganisms9071414] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/21/2021] [Accepted: 06/22/2021] [Indexed: 12/17/2022] Open
Abstract
Ticks and tick-borne pathogens (TBPs) are major constraints to camel health and production, yet epidemiological data on their diversity and impact on dromedary camels remain limited. We surveyed the diversity of ticks and TBPs associated with camels and co-grazing sheep at 12 sites in Marsabit County, northern Kenya. We screened blood and ticks (858 pools) from 296 camels and 77 sheep for bacterial and protozoan TBPs by high-resolution melting analysis and sequencing of PCR products. Hyalomma (75.7%), Amblyomma (17.6%) and Rhipicephalus (6.7%) spp. ticks were morphologically identified and confirmed by molecular analyses. We detected TBP DNA in 80.1% of blood samples from 296 healthy camels. "Candidatus Anaplasma camelii", "Candidatus Ehrlichia regneryi" and Coxiella burnetii were detected in both camels and associated ticks, and Ehrlichia chaffeensis, Rickettsia africae, Rickettsia aeschlimannii and Coxiella endosymbionts were detected in camel ticks. We also detected Ehrlichia ruminantium, which is responsible for heartwater disease in ruminants, in Amblyomma ticks infesting camels and sheep and in sheep blood, indicating its endemicity in Marsabit. Our findings also suggest that camels and/or the ticks infesting them are disease reservoirs of zoonotic Q fever (C. burnetii), ehrlichiosis (E. chaffeensis) and rickettsiosis (R. africae), which pose public health threats to pastoralist communities.
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Affiliation(s)
- Dennis Getange
- International Centre of Insect Physiology and Ecology (icipe), Nairobi P.O. Box 30772-00100, Kenya; (D.G.); (T.C.)
- Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi P.O. Box 62000-00200, Kenya
| | - Joel L. Bargul
- International Centre of Insect Physiology and Ecology (icipe), Nairobi P.O. Box 30772-00100, Kenya; (D.G.); (T.C.)
- Department of Biochemistry, Jomo Kenyatta University of Agriculture and Technology, Nairobi P.O. Box 62000-00200, Kenya
| | - Esther Kanduma
- Department of Biochemistry, School of Medicine, University of Nairobi, Nairobi P.O. Box 30197-00100, Kenya;
| | - Marisol Collins
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 5RF, UK; (M.C.); (E.M.F.); (L.B.-S.)
| | - Boku Bodha
- Directorate of Veterinary Services, County Government of Marsabit, Marsabit P.O. Box 384-60500, Kenya; (B.B.); (D.D.)
| | - Diba Denge
- Directorate of Veterinary Services, County Government of Marsabit, Marsabit P.O. Box 384-60500, Kenya; (B.B.); (D.D.)
| | - Tatenda Chiuya
- International Centre of Insect Physiology and Ecology (icipe), Nairobi P.O. Box 30772-00100, Kenya; (D.G.); (T.C.)
| | - Naftaly Githaka
- International Livestock Research Institute, Nairobi P.O. Box 30709-00100, Kenya;
| | - Mario Younan
- Food and Agriculture Organization of the United Nations (FAO), Programme & Operational Support to Syria Crisis, UN cross-border hub, Gaziantep 27010, Turkey;
| | - Eric M. Fèvre
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 5RF, UK; (M.C.); (E.M.F.); (L.B.-S.)
- International Livestock Research Institute, Nairobi P.O. Box 30709-00100, Kenya;
| | - Lesley Bell-Sakyi
- Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool L3 5RF, UK; (M.C.); (E.M.F.); (L.B.-S.)
| | - Jandouwe Villinger
- International Centre of Insect Physiology and Ecology (icipe), Nairobi P.O. Box 30772-00100, Kenya; (D.G.); (T.C.)
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Frangoulidis D, Kahlhofer C, Said AS, Osman AY, Chitimia-Dobler L, Shuaib YA. High Prevalence and New Genotype of Coxiella burnetii in Ticks Infesting Camels in Somalia. Pathogens 2021; 10:741. [PMID: 34204648 PMCID: PMC8231198 DOI: 10.3390/pathogens10060741] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/04/2021] [Accepted: 06/04/2021] [Indexed: 12/30/2022] Open
Abstract
Coxiella burnetii is the causative agent of Q fever. It can infect animals, humans, and birds, as well as ticks, and it has a worldwide geographical distribution. To better understand the epidemiology of C. burnetii in Somalia, ticks infesting camels were collected from five different regions, including Bari, Nugaal, Mudug, Sool, and Sanaag, between January and March 2018. Collected ticks were tested for C. burnetii and Coxiella-like endosymbiont DNA by using IS1111, icd, and Com1-target PCR assays. Moreover, sequencing of the 16S-rRNA was conducted. Molecular characterization and typing were done by adaA-gene analysis and plasmid-type identification. Further typing was carried out by 14-marker Multi-Locus Variable-Number Tandem Repeats (MLVA/VNTR) analysis. The investigated ticks (n = 237) were identified as Hyalomma spp. (n = 227, 95.8%), Amblyomma spp. (n = 8, 3.4%), and Ripicephalus spp. (n = 2, 0.8%), and 59.1% (140/237) of them were positive for Coxiella spp. While Sanger sequencing and plasmid-type identification revealed a C. burnetii that harbours the QpRS-plasmid, MLVA/VNTR genotyping showed a new genotype which was initially named D21. In conclusion, this is the first report of C. burnetii in ticks in Somalia. The findings denote the possibility that C. burnetii is endemic in Somalia. Further epidemiological studies investigating samples from humans, animals, and ticks within the context of "One Health" are warranted.
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Affiliation(s)
- Dimitrios Frangoulidis
- Bundeswehr Medical Service Headquarters VI-2, Medical Intelligence & Information, Dachauer Str. 128, 80637 Munich, Germany;
- Bundeswehr Institute of Microbiology, Neuherbergstr. 11, 80937 Munich, Germany;
| | - Claudia Kahlhofer
- Bundeswehr Institute of Microbiology, Neuherbergstr. 11, 80937 Munich, Germany;
| | - Ahmed Shire Said
- College of Veterinary Medicine, East Africa University, Bosaso P.O. Box 111, Somalia;
| | - Abdinasir Yusuf Osman
- The Royal Veterinary College, University of London, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire AL9 7TA, UK;
| | - Lidia Chitimia-Dobler
- Bundeswehr Institute of Microbiology, Neuherbergstr. 11, 80937 Munich, Germany;
- Department of Parasitology, Institute of Zoology, University of Hohenheim, Emil Wolff-Strasse 34, 70599 Stuttgart, Germany
| | - Yassir Adam Shuaib
- College of Veterinary Medicine, Sudan University of Science and Technology, P.O. Box 204 Hilat Kuku, Khartoum North 13321, Sudan
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Chisu V, Mura L, Foxi C, Masala G. Coxiellaceae in Ticks from Human, Domestic and Wild Hosts from Sardinia, Italy: High Diversity of Coxiella-like Endosymbionts. Acta Parasitol 2021; 66:654-663. [PMID: 33492605 DOI: 10.1007/s11686-020-00324-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 12/02/2020] [Indexed: 01/13/2023]
Abstract
PURPOSE Coxiella burnetii is known for its potential as veterinary and human bacterial pathogen. The bacteria have been described in ticks, but their role in transmission of Q fever in humans is considered low. Coxiella endosymbionts closely related to C. burnetii have been also isolated from an extensive range of tick species and evidence is growing that these endosymbionts could be linked to human bacteremia. The aim of this study was to get new information on the presence of Coxiella species in ticks infesting wild and domestic hosts in Sardinia, Italy. METHODS Here, 138 ticks collected from the study area were analyzed for the presence of C. burnetii and Coxiella-like bacteria by polymerase chain reaction (PCR), sequencing and philogenetic analyses using a set of primers targeting the 16S rRNA gene. RESULTS DNA of Coxiella species was detected in 69% of the total ticks examined. Based on phylogenetic analysis, the 16S rRNA Coxiella genotypes identified in this study grouped in strongly supported monophyletic clades with identified reference sequences of CLEs detected from Rhipicephalus, Dermacentor, Haemaphysalis and Ornithodoros species and with Coxiella burnetii strains isolated worldwide. CONCLUSION This study reports the molecular detection of a high diversity of Coxiella-like bacteria in Sardinian ticks and confirms also the presence of C. burnetii in tick species previously identified in the island. The role that Coxiella-like endosymbionts play in Sardinian ticks and in their vertebrate hosts needs to be explored further.
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Truong AT, Yun BR, Lim J, Min S, Yoo MS, Yoon SS, Yun YM, Kim JT, Cho YS. Real-time PCR biochip for on-site detection of Coxiella burnetii in ticks. Parasit Vectors 2021; 14:239. [PMID: 33957987 PMCID: PMC8101159 DOI: 10.1186/s13071-021-04744-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/23/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Q fever, a zoonosis caused by Coxiella burnetii, has adverse effects on public health. Ticks are vectors of C. burnetii and they contribute to the transmission of the pathogen. A tool for rapid, sensitive, and accurate detection of C. burnetii from ticks is important for the prevention of Q fever. METHODS Ultra-rapid real-time PCR (UR-qPCR) as a chip-based real-time PCR system was developed for the detection of C. burnetii from ticks. The UR-qPCR system was established and evaluated for the rapidity, sensitivity, and specificity of C. burnetii detection. RESULTS C. burnetii was detected using UR-qPCR from 5644 larval, nymphal, and adult ticks from 408 pools collected from livestock and epidemiologically linked environments in two provinces, Gangwon and Jeju, in Korea. Ticks from three species were identified; Haemaphysalis longicornis accounted for the highest number, present in 333 of 408 pools (81.62%), followed by Haemaphysalis flava in 62 pools (15.19%) and Ixodes nipponensis in 13 pools (3.19%). The rapidity and sensitivity of PCR detection was demonstrated with the sufficient amplification and detection of approximately 56 copies of C. burnetii DNA with only 20 min of PCR amplification. The kappa value for the diagnostic agreement between UR-qPCR and stationary qPCR was in perfect agreement (κ = 1). PCR detection and sequencing indicated that C. burnetii was present in 5 of the 408 pools (1.23%), in which four pools contained H. longicornis and one pool contained H. flava. The infection rates of C. burnetii in the tick pools collected from Gangwon and Jeju Provinces were 1.70% and 0.58%, respectively. Phylogenetic analysis indicated a close relationship between the detected C. burnetii and those originating from goats, humans, and ticks in different countries, such as the USA, France, Germany, and Serbia. CONCLUSIONS The methods described in this study could be important for the prevention and control of Q fever in the two provinces. The UR-qPCR, with its features of mobility, sensitivity, and rapidity, is helpful for constructing early alert systems in the field for C. burnetii in ticks and could help alleviate the transmission of and economic damage due to Q fever.
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Affiliation(s)
- A-Tai Truong
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea.,Faculty of Biotechnology, Thai Nguyen University of Sciences, Thai Nguyen, 250000, Vietnam
| | - Bo-Ram Yun
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Jiyeon Lim
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Subin Min
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Mi-Sun Yoo
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Soon-Seek Yoon
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Young-Min Yun
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Jeju National University, Jeju, 63243, Republic of Korea
| | - Jong-Taek Kim
- College of Veterinary Medicine, Gangwon National University, Chuncheon, 24341, Republic of Korea
| | - Yun Sang Cho
- Parasitic and Honeybee Disease Laboratory, Bacterial and Parasitic Disease Division, Department of Animal & Plant Health Research, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea.
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Lemtudo AP, Mutai BK, Mwamburi L, Waitumbi JN. Seroprevalence of Coxiella burnetii in patients presenting with acute febrile illness at Marigat District Hospital, Baringo County, Kenya. Vet Med Sci 2021; 7:2093-2099. [PMID: 33955713 PMCID: PMC8464244 DOI: 10.1002/vms3.493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 03/25/2021] [Accepted: 04/01/2021] [Indexed: 11/07/2022] Open
Abstract
Q fever is not routinely diagnosed in Kenyan hospitals. This study reports on Q fever in patients presenting at Marigat District Hospital, Kenya, with febrile illness. ELISA was used to detect Coxiella burnetii phase antigens. Of 406 patients, 45 (11.1%) were judged to have acute disease (phase II IgM or IgG > phase I IgG), 2 (0.5%) were chronic (phase I IgG titer >800 or phase I IgG > phase II IgG), while 26 (6.4%) had previous exposure (phase I IgG titer <800). Age (6–10 years, p = 0.002) and contact with goats (p = 0.014) were significant risk factors. Compared to immunofluorescence antibody test, the sensitivity and specificity for phase I IgG were 84% and 98%, respectfully, 46% and 100% for phase II IgG and 35% and 89% for phase II IgM. It is concluded that the low sensitivity of phase II ELISA underestimated the true burden of acute Q fever in the study population.
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Affiliation(s)
- Allan P. Lemtudo
- United States Army Medical Research Directorate‐Africa/KenyaWalter Reed Army Institute of Research/Kenya Medical Research InstituteKisumuKenya
- Department of Biological SciencesSchool of ScienceUniversity of EldoretEldoretKenya
| | - Beth K. Mutai
- United States Army Medical Research Directorate‐Africa/KenyaWalter Reed Army Institute of Research/Kenya Medical Research InstituteKisumuKenya
| | - Lizzy Mwamburi
- Department of Biological SciencesSchool of ScienceUniversity of EldoretEldoretKenya
| | - John N. Waitumbi
- United States Army Medical Research Directorate‐Africa/KenyaWalter Reed Army Institute of Research/Kenya Medical Research InstituteKisumuKenya
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Gharban HA, Yousif AA. Serological and Molecular Phylogenetic Detection of Coxiella burnetii in Lactating Cows, Iraq. THE IRAQI JOURNAL OF VETERINARY MEDICINE 2020. [DOI: 10.30539/ijvm.v44i(e0).1020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
This study is carried out to investigate the prevalence of Coxiella burnetii (C. burnetii) infections in cattle using an enzyme-linked immunosorbent assay (ELISA) and polymerase chain reaction (PCR) assay targeting IS1111A transposase gene. A total of 130 lactating cows were randomly selected from different areas in Wasit province, Iraq and subjected to blood and milk sampling during the period extended between November 2018 and May 2019. ELISA and PCR tests revealed that 16.15% and 10% of the animals studied were respectively positive. Significant correlations (P<0.05) were detected between the positive results and clinical data. Two positive PCR products were analyzed phylogenetically, named as C. burnetii IQ-No.5 and C. burnetii IQ-No.6; and then recorded in the National Center for Biotechnology Information (NCBI) under an accession numbers of MN473204.1 and MN473205.1. Comparative identity of the local strains with NCBI-BLAST strains/isolates revealed 97% similarity and 0.1-0.6% of total genetic mutations/changes. NCBI-BLAST Homology Sequence reported high significant identity (P<0.05) between the local, C. burnetii IQ-No.5 and C. burnetii IQ-No.6; strains and C. burnetii 3345937 (CP014354.1) Netherlands isolate at 99.10% and 99.06%, respectively. The current study concluded that the percentage of infected cows with coxiellosis is relatively high, and Coxiella should be listed as abortive pathogen. Therefore, additional studies should be performed including different animals, samples, and regions.
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Unleashing the literature: a scoping review of canine zoonotic and vectorborne disease research in Canis familiaris in North America. Anim Health Res Rev 2020; 22:26-39. [PMID: 33355067 DOI: 10.1017/s1466252320000237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Domestic dogs (Canis familiaris) provide important benefits to human beings but can also transmit pathogens. Information on the breadth of canine zoonoses and vectorborne research in North America is scarce. A scoping review was conducted to examine (1) the number and type of canine zoonoses and vectorborne studies in domestic dogs conducted in North America since the start of the 21st century; (2) the main research methods reported; (3) the Inequality-adjusted Human Development Index (IHDI) countries in which research was conducted; and (4) whether collaborative integrated terminology was reported in objectives or methods sections. Title/abstract screening, full-text screening, and data-charting were completed by two reviewers. We identified 507 publications evaluating 43 zoonotic or vectorborne pathogens in domestic dogs. Most studies (n = 391 of 512 (76.37%)) were conducted in the USA. The five most frequently researched pathogens were Ehrlichia spp. (n = 81 of 507 (15.98%)), Borrelia burgdorferi (n = 64 of 507 (12.62%)), Leptospira spp. (n = 54 of 507 (10.65%)), Rabies virus (n = 42 of 507 (8.28%)), and Influenza viruses (n = 41 of 507 (8.09%)). These pathogens can cause moderate to severe health outcomes in human beings and in dogs irrespective of IHDI ranking; our review highlights important counts of research conduct among North American countries.
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Deressa FB, Kal DO, Gelalcha BD, Magalhães RJS. Seroprevalence of and risk factors for Q fever in dairy and slaughterhouse cattle of Jimma town, South Western Ethiopia. BMC Vet Res 2020; 16:385. [PMID: 33046069 PMCID: PMC7552523 DOI: 10.1186/s12917-020-02598-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 09/29/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Q fever is a zoonotic disease, caused by Gram negative bacterium C. burnetii, which imparts significant socio-economic burden due to production and reproductive loss (abortion, stillbirth, and infertility) in ruminants and debilitating clinical disease in human populations. While sheep and goats are considered the primary reservoirs of infection to humans, infection can also result from exposure to cattle. Recent studies indicate that in Ethiopia Q fever is a disease of growing public health interest. The top cattle producing region in Ethiopia is the Oromia region and Jimma is the zone that ranks first in the population of cattle within Oromia. While in Jimma zone livestock production plays an important role in people's livelihoods and nutrition, to date, there is no available report on seroprevalence of Q fever in cattle. This is particularly important due to the low dairy farm biosecurity in Jimma town. This study aimed to evaluate the potential risk for public health from cattle production; a specific objective of this study included the estimation of the seroprevalence of C. burnetii infection and its potential risk factors in dairy cattle and cattle for slaughter in Jimma Town. RESULTS The seroprevalence of C. burnetii in cattle present at dairy farms was significantly lower compared to cattle presented at slaughterhouse [6.17% (95% CI: 3.41-10.13) and 11.79% (95% CI: 7.63-17.17), respectively; (P = 0.04)]. As the age of dairy cattle increase by 1 year, they were 1.51 more likely to be positive of C. burnetii [OR = 1.51 (95%CI: 1.30-1.75; (P = 0.000)]. Cattle managed in semi-intensive production systems were 8.08 more likely to be C. burnetii seropositive compared to intensively managed dairy cattle [OR = 8.08 (95%CI: 1.03-63.68); P = 0.047]. Dairy cattle with access to nuisance animals like dogs, cats and mice were 5.65 more likely to be C. burnetii seropositive compared to dairy cattle without access to these animals. On the other hand, dairy cattle that have no tick infestation are 93% less likely to be seropositive for C. burnetii [OR = 0.07 (95%CI: 0.01-0.74); P = 0.027]. Concerning farm-level data, farms of larger herd sizes were 1.03 more likely to be C. burnetii seropositive than small herd farms [OR = 1.03 (95%CI: 0.99-1.06)]. The result from slaughterhouse indicates that as the age of cattle increase by 1 year their chance of being C. burnetii seropositive increases by 2.27 [OR = 2.27 (95%CI: 1.93-2.68); p = 0.000]. CONCLUSION Considering its zoonotic and economic burden the seroprevalence of Q fever recorded in this study is of eminent public health concern with a farm-level and slaughterhouse seroprevalence of 6.17 and 11.79% respectively. Based on modifiable risk factors identified in this study, Q fever management plans better be focused on health education and awareness campaigns for abattoir workers and dairy farm workers. Dairy farm Q fever management plans should contemplate improved dairy herd biosecurity with regards to cattle tick infestation, keeping different livestock species segregated and avoiding mixing of herd with others with unknown health status.
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Affiliation(s)
- Feyissa Begna Deressa
- School of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Jimma University, P.O.Box: 307, Jimma, Ethiopia.
| | - David Onafruo Kal
- Bahr El Ghazal University College of Veterinary Science, P.O. Box 10739, Wau, South Sudan
| | - Benti Deressa Gelalcha
- School of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Jimma University, P.O.Box: 307, Jimma, Ethiopia
| | - Ricardo J Soares Magalhães
- UQ Spatial Epidemiology Laboratory, School of Veterinary Science, The University of Queensland, Gatton, Queensland, 4343, Australia
- Children's Health and Environment Program, Child Health Research Centre, The University of Queensland, South Brisbane, QLD, 4101, Australia
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Cadmus SI, Akporube KA, Ola-Daniel F, Adelakun OD, Akinseye VO. Seroprevalence and associated factors of brucellosis and Q-fever in cattle from Ibarapa area, Oyo State, South-western Nigeria. Pan Afr Med J 2020; 36:370. [PMID: 33235647 PMCID: PMC7666694 DOI: 10.11604/pamj.2020.36.370.24925] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 07/31/2020] [Indexed: 11/11/2022] Open
Abstract
Introduction a cross-sectional study was conducted to determine the seroprevalence and associated factors of brucellosis and Q-fever among cattle in a rural setting in Oyo State, Nigeria. Methods one hundred and fourty nine serum samples (24 males; 125 female) from 16 cattle herds were collected and screened. The Rose Bengal Plate test (RBPT) and competitive Enzyme-Linked Immunosorbent Assay (cELISA) were used for brucellosis while indirect Enzyme-Linked Immunosorbent Assay (iELISA) was used for Q-fever. Further, a checklist was used to collect data on cattle sampled. Data were analyzed using STATA 12. Results serum analysis revealed that 11.4% (17/149) and 6.7% (10/149) were seropositive by RBPT and cELISA respectively for brucellosis, while 23.5% (35/149) were seropositive by iELISA for Q-fever. A significant association was detected between cattle age (OR=27.7; 95% CI: 2.34-449.86), herd size (OR=10.53; 95% CI: 1.85-60.53) and seropositivity to Brucella infection. Also, there was a significant association between breed (OR=6.69; 95% CI: 1.7-28.74), herd size (OR=4.25; 95% CI: 1.31-13.85) of cattle and seropositivity to Coxiella burnetii infection. Importantly, the only significant associated factor to cattle herd seropositivity to Brucella and C. burnetii infections was the method of handling aborted foetuses. Conclusion the study revealed that brucellosis and Q-fever are prevalent among cattle in the study area. Thus, there is a need for further studies to provide better insight into the epidemiology of both diseases and particularly Q-fever. This becomes imperative in the study area and generally in Nigeria given the dearth of information about the diseases in pastoralist communities who are at grave risk of infection at the human-animal-ecosystem interface.
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Affiliation(s)
- Simeon Idowu Cadmus
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria.,Center for Control and Prevention of Zoonoses, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Kelechi Araloluwa Akporube
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria.,Department of Veterinary Public Health and Preventive Medicine, College of Veterinary Medicine, Michael Okpara University of Agriculture, Umudike, Nigeria
| | - Fiyinfoluwa Ola-Daniel
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Olubukola Deborah Adelakun
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria.,Department of Animal Health Technology, College of Agriculture and Technology, Igboora, Oyo State, Nigeria
| | - Victor Oluwatoyin Akinseye
- Department of Veterinary Public Health and Preventive Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria.,Department of Chemical Sciences, Augustine University Ilara-Epe, Lagos State, Nigeria
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31
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Mousapour M, Oveisi A, Key YA, Mikaeili E, Rahimi F, Shademan B, Bedoustani AB, Fattahi S, Fasaei MS, Abbasnezhad AD, Taefehshokr S, Baradaran B. First Serological & Molecular Study of Coxiella burnetii in Stray, Domestic Cats, and Their Owners in Iran. Top Companion Anim Med 2020; 41:100471. [PMID: 32823157 DOI: 10.1016/j.tcam.2020.100471] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/17/2020] [Accepted: 07/20/2020] [Indexed: 11/16/2022]
Abstract
Coxiella burnetii, the agent of Q fever, is recognized as a worldwide zoonosis a wide host and potentially complex reservoir systems. Infected ruminants are the main source of infection for humans, but cats also represent a potential source of infection. The prevalence of C burnetii in cats in Iran is unknown and the risks of transmission to humans are undetermined. This study aimed to determine the prevalence of C burnetii in domestic cats and their owners. An Enzyme-linked immunosorbent assay was used for detection of anti-C burnetii antibodies in both cats and humans. Cats serum samples and humans serum samples (n = 85) were tested with indirect ELISA. C burnetii was diagnosed using real time- polymerase chain reaction. Antibodies were detected in 19 sera of 85 (22.35%) samples in stray cats, 9 sera of 78 (11.53%) samples of domestic cats and 4 sera of 78 (5.12%) samples of their owners. This first study of C burnetii prevalence in cats in Iran has indicated that positive samples can be found throughout the country and these results confirm that Iranian cats have been exposed to C burnetii. Moreover, this study demonstrates that cat owners, breeders and veterinary personnel might be at higher risk of exposure of C burnetii.
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Affiliation(s)
- Morteza Mousapour
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Amin Oveisi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Yashar Azari Key
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran; Young Researchers and Elite Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Ehsan Mikaeili
- Department of Pathology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Farzad Rahimi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Behrouz Shademan
- Ege University Medical School, Department of Medical Biology, Izmir, Turkey
| | | | - Sahand Fattahi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Melika Saadipoor Fasaei
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Amir Dabbagh Abbasnezhad
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Sina Taefehshokr
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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Adesiyun AA, Knobel DL, Thompson PN, Wentzel J, Kolo FB, Kolo AO, Conan A, Simpson GJG. Sero-Epidemiological Study of Selected Zoonotic and Abortifacient Pathogens in Cattle at a Wildlife-Livestock Interface in South Africa. Vector Borne Zoonotic Dis 2019; 20:258-267. [PMID: 31841655 DOI: 10.1089/vbz.2019.2519] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
A cross sectional sero-epidemiological study was conducted on cattle in a communal farming area adjacent to Kruger National Park at a wildlife-livestock interface in South Africa. A total of 184 cattle were screened for exposure to 5 abortifacient or zoonotic pathogens, namely Coxiella burnetii, Toxoplasma gondii, Chlamydophila abortus, Neospora caninum, and Rift Valley fever virus (RVFV) using enzyme-linked immunosorbent assays. In addition, the virus neutralization test was used to confirm the presence of antibodies to RVFV. The seroprevalence of C. burnetii, T. gondii, C. abortus, N. caninum, and RVFV antibodies was 38.0%, 32.6%, 20.7%, 1.6%, and 0.5%, respectively, and varied between locations (p < 0.001). Seroprevalence of C. burnetii and T. gondii was highly clustered by location (intraclass correlation coefficient [ICC] = 0.57), and that of C. abortus moderately so (ICC = 0.11). Seroprevalence was not associated with sex or age for any pathogen, except for C. abortus, for which seroprevalence was positively associated with age (p = 0.01). The predominant mixed infections were C. burnetii and T. gondii (15.2%) and C. burnetii, T. gondii, and C. abortus (13.0%). The serological detection of the five abortifacient pathogens in cattle indicates the potential for economic losses to livestock farmers, health impacts to domestic animals, transmission across the livestock-wildlife interface, and the risk of zoonotic transmission. This is the first documentation of T. gondii infection in cattle in South Africa, while exposure to C. burnetii, C. abortus, and N. caninum infections is being reported for the first time in cattle in a wildlife-livestock interface in the country.
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Affiliation(s)
- Abiodun A Adesiyun
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa.,Department of Basic Veterinary Sciences, Faculty of Medical Sciences, University of the West Indies, St Augustine, Trinidad and Tobago
| | - Darryn L Knobel
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa.,Center for Conservation Medicine and Ecosystem Health, Ross University School of Veterinary Medicine, Basseterre, St. Kitts and Nevis
| | - Peter N Thompson
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa.,Centre for Veterinary Wildlife Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Jeanette Wentzel
- Centre for Veterinary Wildlife Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa.,Hans Hoheisen Wildlife Research Station, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Francis B Kolo
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Agatha O Kolo
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Anne Conan
- Center for Conservation Medicine and Ecosystem Health, Ross University School of Veterinary Medicine, Basseterre, St. Kitts and Nevis
| | - Gregory J G Simpson
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa.,Centre for Veterinary Wildlife Studies, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
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33
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Ullah Q, El-Adawy H, Jamil T, Jamil H, Qureshi ZI, Saqib M, Ullah S, Shah MK, Khan AZ, Zubair M, Khan I, Mertens-Scholz K, Henning K, Neubauer H. Serological and Molecular Investigation of Coxiella burnetii in Small Ruminants and Ticks in Punjab, Pakistan. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16214271. [PMID: 31689887 PMCID: PMC6861879 DOI: 10.3390/ijerph16214271] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 01/09/2023]
Abstract
Coxiellosis is a zoonotic disease caused by the obligate intracellular bacterium Coxiella burnetii affecting the productive and reproductive capabilities of animals. This study was conducted to gain insight into the seroprevalence of coxiellosis in small ruminants in seven farms of the Punjab, Pakistan. Potential risk factors were assessed. In total, 1000 serum samples (500 from sheep and 500 from goats) and 163 ticks were collected from the ruminants. All these 163 ticks were merged into 55 pools (29 pools for ticks from sheep and 26 pools for ticks from goat). Serum samples were investigated using an indirect ELISA and PCR. Coxiella burnetii DNA was detected in 29 pooled seropositive samples and 11 pooled ticks by real-time qPCR. Serological analysis revealed a prevalence of 15.6% and 15.0% in sheep and goats, respectively. A significant association was found between seropositivity and different variables like district, lactational status, reproductive status, body condition and reproductive disorders. Univariate analysis showed that detection of C. burnetii DNA in tick pools was significantly associated with the presence of ticks on sheep and goats. However, a non-significant association was found for the prevalence of C. burnetii DNA in serum pools. Hence, C. burnetii infection is prevalent in small ruminants and ticks maintained at livestock farms in Punjab, Pakistan.
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Affiliation(s)
- Qudrat Ullah
- Faculty of Veterinary and Animal Sciences, Gomal University, Dera Ismail Khan 29050, Pakistan.
- Department of Theriogenology, University of Agriculture Faisalabad, Faisalabad 38000, Pakistan.
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743 Jena, Germany.
| | - Hosny El-Adawy
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743 Jena, Germany.
- Faculty of Veterinary Medicine, Kafrelsheik University, Kafr El-Sheik 35516, Egypt.
| | - Tariq Jamil
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743 Jena, Germany.
| | - Huma Jamil
- Department of Theriogenology, University of Agriculture Faisalabad, Faisalabad 38000, Pakistan.
| | - Zafar Iqbal Qureshi
- Department of Theriogenology, University of Agriculture Faisalabad, Faisalabad 38000, Pakistan.
| | - Muhammad Saqib
- Department of Clinical Medicine and Surgery, University of Agriculture Faisalabad, Faisalabad 38000, Pakistan.
| | - Shakeeb Ullah
- Faculty of Veterinary and Animal Sciences, Gomal University, Dera Ismail Khan 29050, Pakistan.
| | - Muhammad Kamal Shah
- Faculty of Veterinary and Animal Sciences, Gomal University, Dera Ismail Khan 29050, Pakistan.
| | - Alam Zeb Khan
- Faculty of Veterinary and Animal Sciences, Gomal University, Dera Ismail Khan 29050, Pakistan.
| | - Muhammad Zubair
- Faculty of Veterinary and Animal Sciences, University of Poonch Rawalakot, Azad Kashmir 12350, Pakistan.
| | - Iahtasham Khan
- Section of Epidemiology and Public Health, University of Veterinary and Animal Sciences, Lahore, sub-campus Jhang, Jhang 35200, Pakistan.
| | - Katja Mertens-Scholz
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743 Jena, Germany.
| | - Klaus Henning
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743 Jena, Germany.
| | - Heinrich Neubauer
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743 Jena, Germany.
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Munyua PM, Njenga MK, Osoro EM, Onyango CO, Bitek AO, Mwatondo A, Muturi MK, Musee N, Bigogo G, Otiang E, Ade F, Lowther SA, Breiman RF, Neatherlin J, Montgomery J, Widdowson MA. Successes and challenges of the One Health approach in Kenya over the last decade. BMC Public Health 2019; 19:465. [PMID: 32326940 PMCID: PMC6696663 DOI: 10.1186/s12889-019-6772-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
More than 75% of emerging infectious diseases are zoonotic in origin and a transdisciplinary, multi-sectoral One Health approach is a key strategy for their effective prevention and control. In 2004, US Centers for Disease Control and Prevention office in Kenya (CDC Kenya) established the Global Disease Detection Division of which one core component was to support, with other partners, the One Health approach to public health science. After catalytic events such as the global expansion of highly pathogenic H5N1 and the 2006 East African multi-country outbreaks of Rift Valley Fever, CDC Kenya supported key Kenya government institutions including the Ministry of Health and the Ministry of Agriculture, Livestock, and Fisheries to establish a framework for multi-sectoral collaboration at national and county level and a coordination office referred to as the Zoonotic Disease Unit (ZDU). The ZDU has provided Kenya with an institutional framework to highlight the public health importance of endemic and epidemic zoonoses including RVF, rabies, brucellosis, Middle East Respiratory Syndrome Coronavirus, anthrax and other emerging issues such as anti-microbial resistance through capacity building programs, surveillance, workforce development, research, coordinated investigation and outbreak response. This has led to improved outbreak response, and generated data (including discovery of new pathogens) that has informed disease control programs to reduce burden of and enhance preparedness for endemic and epidemic zoonotic diseases, thereby enhancing global health security. Since 2014, the Global Health Security Agenda implemented through CDC Kenya and other partners in the country has provided additional impetus to maintain this effort and Kenya’s achievement now serves as a model for other countries in the region. Significant gaps remain in implementation of the One Health approach at subnational administrative levels; there are sustainability concerns, competing priorities and funding deficiencies.
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Affiliation(s)
- Peninah M Munyua
- Division of Global Health Protection, US Centers for Disease Control and Prevention-Kenya, Nairobi, Kenya.
| | - M Kariuki Njenga
- Paul G. Allen School for Global Animal Health, Washington State University, Pullman, Washington, USA
| | - Eric M Osoro
- Zoonotic Disease Unit, Kenya Ministry of health, Nairobi, Kenya
| | - Clayton O Onyango
- Division of Global Health Protection, US Centers for Disease Control and Prevention-Kenya, Nairobi, Kenya
| | - Austine O Bitek
- Zoonotic Disease Unit, Ministry of Agriculture Livestock and Fisheries, Nairobi, Kenya
| | - Athman Mwatondo
- Zoonotic Disease Unit, Kenya Ministry of health, Nairobi, Kenya
| | - Mathew K Muturi
- Zoonotic Disease Unit, Ministry of Agriculture Livestock and Fisheries, Nairobi, Kenya
| | - Norah Musee
- Division of Global Health Protection, US Centers for Disease Control and Prevention-Kenya, Nairobi, Kenya
| | - Godfrey Bigogo
- Center for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - Elkanah Otiang
- Center for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - Fredrick Ade
- Center for Global Health Research, Kenya Medical Research Institute, Kisumu, Kenya
| | - Sara A Lowther
- Division of Global Health Protection, US Centers for Disease Control and Prevention-Kenya, Nairobi, Kenya.,Division of Global Health Protection, US Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Robert F Breiman
- Emory Global Health Institute, Emory University, Atlanta, GA, USA
| | - John Neatherlin
- Division of Global Health Protection, US Centers for Disease Control and Prevention-Kenya, Nairobi, Kenya.,Division of Global Health Protection, US Centers for Disease Control and Prevention, Atlanta, GA, USA.,Division of Global Health Protection, US Centers for Disease Control and Prevention, Dakar, Senegal
| | - Joel Montgomery
- Division of Global Health Protection, US Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Marc-Alain Widdowson
- Division of Global Health Protection, US Centers for Disease Control and Prevention-Kenya, Nairobi, Kenya.,Division of Global Health Protection, US Centers for Disease Control and Prevention, Atlanta, GA, USA
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35
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Dabaja MF, Greco G, Villari S, Vesco G, Bayan A, Bazzal BE, Ibrahim E, Gargano V, Sciacca C, Lelli R, Ezzedine M, Mortada H, Tempesta M, Mortada M. Occurrence and risk factors of Coxiella burnetii in domestic ruminants in Lebanon. Comp Immunol Microbiol Infect Dis 2019; 64:109-116. [PMID: 31174685 DOI: 10.1016/j.cimid.2019.03.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 02/15/2019] [Accepted: 03/05/2019] [Indexed: 11/17/2022]
Abstract
Coxiella burnetii causes diseases in humans (Q fever) and animals, domestic ruminants playing a major role in the epidemiology of the infection. Information on C. burnetii infection in Lebanon is scanty. In order to assess the prevalence of C. burnetii infection in ruminants, a cross-sectional study was undertaken in 2014. A total of 1633 sera from ruminants (865 cattle, 384 sheep and 384 goats) from 429 farms (173 cattle, 128 sheep and 128 goats), in seven provinces of Lebanon were randomly selected and assayed for the presence of antibodies. 39.86% of farms (95% CI: 35.23-44.56) resulted positive. The seroprevalence was 30.63% in Cattle-farms, 46.88% in sheep-farms and 45.31% in goat-farms. Milk samples collected from 282 seropositive animals (86 cows, 93 sheep and 103 goats) from 171 positive farms were tested by a high sensitive Real-Time PCR targeted to the IS1111 transposon of C. burnetii. The overall prevalence in farms was estimated to be 14.04%. Cattle-, sheep- and goat farm prevalence rates were 15.09%, 10% and 17.24%, respectively. The findings of the study show that C. burnetii prevalence in Lebanese domestic ruminants is related to animal species and farming practices. Indeed, the mixed herds with sheep (p < 0.01), the presence of common lambing/kidding areas (p < 0.001) in farms where the use of disinfectants was not a routine practice (p < 0.05) were identified as important risk factors. The results of the study provide baseline information for setting up herd management and public health measures for the prevention and control of Q fever in Lebanon.
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Affiliation(s)
- M F Dabaja
- Department of Veterinary Medicine, University of Bari "Aldo Moro", Bari, Italy; Lebanese University, Doctoral School of sciences and Technology, Beirut, Lebanon; Lebanese Agricultural Research Institute, Lebanon.
| | - G Greco
- Department of Veterinary Medicine, University of Bari "Aldo Moro", Bari, Italy.
| | - S Villari
- Istituto Zooprofilattico Sperimentale della Sicilia "A. Mirri", Italy.
| | - G Vesco
- Istituto Zooprofilattico Sperimentale della Sicilia "A. Mirri", Italy.
| | - A Bayan
- Lebanese University, Faculty of Science, Beirut, Lebanon.
| | - B El Bazzal
- Republic of Lebanon Ministry of Agriculture, Beirut, Lebanon.
| | - E Ibrahim
- Republic of Lebanon Ministry of Agriculture, Beirut, Lebanon.
| | - V Gargano
- Istituto Zooprofilattico Sperimentale della Sicilia "A. Mirri", Italy.
| | - C Sciacca
- Istituto Zooprofilattico Sperimentale della Sicilia "A. Mirri", Italy.
| | - R Lelli
- Istituto Zooprofilattico Sperimentale della Sicilia "A. Mirri", Italy; Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", Teramo, Italy.
| | - M Ezzedine
- Lebanese University, Doctoral School of sciences and Technology, Beirut, Lebanon; Lebanese University, Faculty of Science, Beirut, Lebanon.
| | - H Mortada
- Lebanese University, Faculty of Agricultural, Beirut, Lebanon.
| | - M Tempesta
- Department of Veterinary Medicine, University of Bari "Aldo Moro", Bari, Italy.
| | - M Mortada
- Lebanese University, Doctoral School of sciences and Technology, Beirut, Lebanon; Lebanese University, Faculty of Science, Beirut, Lebanon.
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36
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Larson PS, Espira L, Grabow C, Wang CA, Muloi D, Browne AS, Deem SL, Fèvre EM, Foufopoulos J, Hardin R, Eisenberg JNS. The sero-epidemiology of Coxiella burnetii (Q fever) across livestock species and herding contexts in Laikipia County, Kenya. Zoonoses Public Health 2019; 66:316-324. [PMID: 30788910 PMCID: PMC6563451 DOI: 10.1111/zph.12567] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/15/2018] [Accepted: 01/10/2019] [Indexed: 11/30/2022]
Abstract
Coxiella burnetii, the causative agent of Query fever (Q fever), is among the most highly infectious zoonotic pathogens transmitted among livestock, with chronic effects challenging to veterinary and medical detection and care systems. Transmission among domestic livestock species can vary regionally due to herd management practices that determine which livestock species are raised, whether or not livestock are in contact with wildlife, and the susceptibility of these livestock to infection. To explore how different livestock management practices are associated with the risk of infection in multispecies environments, we carried out a comparative study of three types of herd management systems in the central Kenyan county of Laikipia: agro-commercial, mixed conservancy/commercial, and smallholder ranches. We tested C. burnetii antibody seroprevalence in four common livestock species. Across all management types, the highest seroprevalence was in camels (20%), followed by goats (18%), sheep (13%), and cattle (6%). We observed a lower odds of testing seropositive for young compared to adult animals (adjusted OR = 0.44 [95% CI 0.24, 0.76]), and for males compared to females (adjusted OR = 0.52 [95% CI 0.33, 0.80]). Animals from mixed conservancy/commercial and smallholder operations had a higher odds of testing seropositive compared to animals from agro-commercial ranches (adjusted OR = 5.17 [95% CI 2.71, 10.44] and adjusted OR = 2.21 [95% CI 1.17, 4.43] respectively). These data suggest that herd management practices might affect the transmission dynamics of C. burnetiiin arid African ecosystems like those seen in Kenya where several transmission modes are possible, risk of drought has promoted new livestock species such as camels, and multiple wildlife species may co-occur with livestock on the landscape. Further longitudinal studies are needed to disentangle the mechanisms underlying these patterns, and further explore transmission patterns between wildlife, domestic animal, and human populations.
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Affiliation(s)
- Peter S Larson
- School for Environment and Sustainability, University of Michigan, Ann Arbor, Michigan.,Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, Michigan
| | - Leon Espira
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, Michigan
| | - Cole Grabow
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, Michigan
| | - Christine A Wang
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Dishon Muloi
- Centre for Immunity, Infection and Evolution, University of Edinburgh, Edinburgh, UK.,International Livestock Research Institute, Nairobi, Kenya.,Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK
| | - A Springer Browne
- Saint Louis Zoo Institute for Conservation Medicine, Saint Louis, Missouri
| | - Sharon L Deem
- Saint Louis Zoo Institute for Conservation Medicine, Saint Louis, Missouri
| | - Eric M Fèvre
- International Livestock Research Institute, Nairobi, Kenya.,Institute of Infection and Global Health, University of Liverpool, Liverpool, UK
| | - Johannes Foufopoulos
- School for Environment and Sustainability, University of Michigan, Ann Arbor, Michigan
| | - Rebecca Hardin
- School for Environment and Sustainability, University of Michigan, Ann Arbor, Michigan
| | - Joseph N S Eisenberg
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, Michigan
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Sahu R, Kale SB, Vergis J, Dhaka P, Kumar M, Choudhary M, Jain L, Choudhary BK, Rawool DB, Chaudhari SP, Kurkure NV, Malik S, Barbuddhe SB. Apparent prevalence and risk factors associated with occurrence of Coxiella burnetii infection in goats and humans in Chhattisgarh and Odisha, India. Comp Immunol Microbiol Infect Dis 2018; 60:46-51. [DOI: 10.1016/j.cimid.2018.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 05/22/2018] [Accepted: 08/29/2018] [Indexed: 02/08/2023]
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Khamesipour F, Dida GO, Anyona DN, Razavi SM, Rakhshandehroo E. Tick-borne zoonoses in the Order Rickettsiales and Legionellales in Iran: A systematic review. PLoS Negl Trop Dis 2018; 12:e0006722. [PMID: 30204754 PMCID: PMC6181433 DOI: 10.1371/journal.pntd.0006722] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 10/11/2018] [Accepted: 07/27/2018] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Tick-borne zoonoses in the Order Rickettsiales and Legionellales cause infections that often manifest as undifferentiated fevers that are not easy to distinguish from other causes of acute febrile illnesses clinically. This is partly attributed to difficulty in laboratory confirmation since convalescent sera, specific diagnostic reagents, and the required expertise may not be readily available. As a result, a number of tick-borne zoonoses are underappreciated resulting in unnecessary morbidity, mortality and huge economic loses. In Iran, a significant proportion of human infectious diseases are tick-borne, with anecdotal evidence suggesting that tick-borne zoonoses are widespread but underreported in the country. Epidemiological review is therefore necessary to aid in the effective control and prevention of tick-borne zonooses in Iran. The aim of this review is to provide an in-depth and comprehensive overview of anaplasmosis, ehrlichiosis, spotted fever group rickettsioses and coxiellosis in Iran. METHODS Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, all relevant publications on tick-borne zoonoses in the Order Rickettsiales and Legionellales in Iran were searched using a number of search terms. The search was confined to authentic resources from repositories of popular data bases among them PubMed, Web of Science, Google Scholar, Science Direct, SpringerLink and SCOPUS. The search items included peer reviewed journals, books and book chapters published between 1996 and 2017. RESULTS A total of 1 205 scientific publications and reports were sourced, of which 63 met the search criteria and were reviewed. Of the 63 articles reviewed, 36 (57.1%) reported on coxiellosis, 15 (23.8%) on anaplasmosis, 11 (17.5%) on ehrlichiosis and 1(1.6%) on spotted fever group rickettsiae in a large scale study involving four countries, among them Iran. The existence of tick-borne pathogens in the Order Rickettsiales and Legionellales was confirmed by molecular, serological and microscopic techniques conducted on samples obtained from sheep, cattle, goats, camels, poultry, animal products (milk and eggs), dogs, ticks and even human subjects in different parts of the country; pointing to a countrywide distribution. DISCUSSION Based on the review, coxiellosis, anaplasmosis, ehrlichiosis, and SFG rickettsiae can be categorized as emerging tick-borne zoonotic diseases in Iran given the presence of their causiative agents (C. burnetii, A. phagocytophilum, A. marginale, A. bovis, A. ovis, A. central, E. canis, E. ewingii, E. chaffeensis and R. conorii) collectively reported in a variety of domestic animals, animal products, arthropods and human beings drawn from 22 provinces in Iran. CONCLUSION Given the asymptomatic nature of some of these zoonoses, there is a high likelihood of silent transmission to humans in many parts of the country, which should be considered a public health concern. Presently, information on the transmission intensity of tick-borne zoonoses caused by pathogens in the Order Rickettsiales and Legionellales to humans and its public health impact in Iran is scanty.
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Affiliation(s)
- Faham Khamesipour
- Cellular and Molecular Research Centre, Sabzevar University of Medical Sciences, Sabzevar, Iran
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Gabriel O. Dida
- School of Public Health and Community Development, Maseno University, Maseno, Kenya
- Department of Community and Public Health, Technical University of Kenya, Nairobi, Kenya
| | - Douglas N. Anyona
- School of Environment and Earth Sciences, Maseno University, Maseno, Kenya
| | - S. Mostafa Razavi
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Ehsan Rakhshandehroo
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
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Koka H, Sang R, Kutima HL, Musila L. Coxiella burnetii Detected in Tick Samples from Pastoral Communities in Kenya. BIOMED RESEARCH INTERNATIONAL 2018; 2018:8158102. [PMID: 30105251 PMCID: PMC6076967 DOI: 10.1155/2018/8158102] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/23/2018] [Accepted: 06/05/2018] [Indexed: 01/05/2023]
Abstract
Ticks are important disease vectors in Kenya with documented evidence of carriage of zoonotic pathogens. Coxiella burnetii is an important tick-borne pathogen that is underreported in Kenya and yet this infection likely contributes to undiagnosed febrile disease in pastoral communities. Archived human blood (278) and tick pool samples (380) collected from five pastoral communities in Kenya were screened for C. burnetii by PCR using primers targeting the transposon-like IS1111 region. All the human blood samples were negative for C. burnetii DNA. However, C. burnetii was detected in 5.53% (21/380) of the tick pools tested. Four of the twenty-one PCR positive samples were sequenced. The findings indicate that Coxiella burnetii was not present in the human blood samples tested. However, C. burnetii was detected in ticks from Mai Mahiu, Marigat, Ijara, Isiolo, and Garissa indicating a natural infection present in the tick vector that poses a risk to livestock and humans in these communities.
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Affiliation(s)
- Hellen Koka
- Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000-00200, Nairobi, Kenya
- US Army Medical Research Directorate-Kenya, P.O. Box 606-00621, Nairobi, Kenya
| | - Rosemary Sang
- Kenya Medical Research Institute, Centre for Virus Research, P.O. Box 54628-00200, Nairobi, Kenya
- International Centre for Insect Physiology and Ecology, P.O. Box 30772-00100, Kenya
| | - Helen Lydia Kutima
- Jomo Kenyatta University of Agriculture and Technology, P.O. Box 62000-00200, Nairobi, Kenya
| | - Lillian Musila
- US Army Medical Research Directorate-Kenya, P.O. Box 606-00621, Nairobi, Kenya
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Dabaja MF, Greco G, Villari S, Bayan A, Vesco G, Gargano V, Arnone M, Hneino M, Lelli R, Ezzedine M, Berry A, Mortada H, Tempesta M, Mortada M. The First Serological Study of Q Fever in Humans in Lebanon. Vector Borne Zoonotic Dis 2018; 18:138-143. [PMID: 29336692 DOI: 10.1089/vbz.2016.2102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE The aim of this study was to estimate, for the first time, the human seroprevalence of Q fever in Lebanon, by assessing the presence of antibodies against the causative agent, Coxiella burnetii. A total number of 421 serum samples (226 females and 196 males) were collected in February 2015 from hospitals and laboratories dispersed in five Lebanese provinces: Akkar, Bekaa, Mount Lebanon, Nabatieh, and South Lebanon. METHODS Serial testing approach was used. Samples were first screened for IgG phase II antibodies against C. burnetii by Enzyme Linked Immunosorbent Assay (ELISA) Kit. Then, both positive and inconclusive sera were reexamined by immunofluorescence assay (IFA) test with the aims to confirm and specify the infection status (past or probably acute infection) by detecting IgG (I/II) and IgM (I/II) in human sera. RESULTS Screening of 421 samples was estimated to be 38.70% (95% CI 34-43.3) positive samples, 5.90% (95% CI 3.7-8.2) suspect samples (as doubtful results), and 55.40% (95% CI 50.7-60.1) negative samples. Furthermore, all positive and suspect samples by ELISA test were retested by immunofluorescence assay test (IFAT), and the prevalence of positive sample was 37% and the infection case was recorded: 23.75% (95% CI 19.7-27.8) samples resulted from past infection, 1.9% (95% CI 0.6-3.2) probably acute infection characterized by several dominance clinical symptoms as: fever, cough, headache, difficulty breathing, and atypical pneumonia, and 0.23% (95% CI 0-0.7) inconclusive sample accompanied by different symptoms as bone metastasis and lung cancer. CONCLUSION The study records the exposition of 37% of 421 patients to C. burnetii distributed in five Lebanese provinces with the highest seroprevalence in Bekaa and Akkar provinces and the lowest reported in Mount Lebanon. This difference may be due to the presence of high density of livestock production and of major agricultural areas in these two provinces.
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Affiliation(s)
- Mayssaa Fawaz Dabaja
- 1 Department of Veterinary Medicine, University of Bari , Bari, Italy .,2 Doctoral School of Sciences and Technology, Lebanese University , Beirut, Lebanon .,3 Lebanese Agricultural Research Institute , Fanar, Lebanon
| | - Grazia Greco
- 1 Department of Veterinary Medicine, University of Bari , Bari, Italy
| | - Sara Villari
- 4 Istituto Zooprofilattico Sperimentale della Sicilia "A. Mirri" , Palermo, Italy
| | - Ali Bayan
- 5 Faculty of Science, Section I, Lebanese University , Hadath, Lebanon
| | - Gesualdo Vesco
- 4 Istituto Zooprofilattico Sperimentale della Sicilia "A. Mirri" , Palermo, Italy
| | - Valeria Gargano
- 4 Istituto Zooprofilattico Sperimentale della Sicilia "A. Mirri" , Palermo, Italy
| | - Maria Arnone
- 4 Istituto Zooprofilattico Sperimentale della Sicilia "A. Mirri" , Palermo, Italy
| | - Mohamad Hneino
- 6 Faculty of Public Health, Section I, Lebanese University , Hadath, Lebanon
| | - Rossella Lelli
- 7 Istituto Zooprofilattico Sperimentale Abruzzo e Molise "G. Caporale," Teramo, Italy
| | - Mohamad Ezzedine
- 2 Doctoral School of Sciences and Technology, Lebanese University , Beirut, Lebanon .,5 Faculty of Science, Section I, Lebanese University , Hadath, Lebanon
| | - Atika Berry
- 8 Republic of Lebanon , Ministry of Public Health, Beirut, Lebanon
| | - Hussein Mortada
- 9 Faculty of Agricultural, Lebanese University , Beirut, Lebanon
| | - Maria Tempesta
- 1 Department of Veterinary Medicine, University of Bari , Bari, Italy
| | - Mohamad Mortada
- 2 Doctoral School of Sciences and Technology, Lebanese University , Beirut, Lebanon .,5 Faculty of Science, Section I, Lebanese University , Hadath, Lebanon
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Mahdavi Roshan H, Saadati D, Najimi M. Molecular detection of Brucella melitensis, Coxiella burnetii and Salmonella abortusovis in aborted fetuses of Baluchi sheep in Sistan region, south-eastern Iran. IRANIAN JOURNAL OF VETERINARY RESEARCH 2018; 19:128-132. [PMID: 30046325 PMCID: PMC6056147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 12/09/2017] [Accepted: 01/02/2018] [Indexed: 06/08/2023]
Abstract
Abortion in sheep and goats causes enormous economic losses. This study revealed the epidemiology of abortion caused by Brucella melitensis, Coxiella burnetii and Salmonella abortusovis in Baluchi sheep in Sistan region. In the autumn of 2015 and winter of 2016, a total of 78 aborted sheep fetuses were collected from all over the Sistan region. Risk factors, including location of livestock, history of abortion, gender of fetus, age of fetus, age of ewe and parity were obtained using a questionnaire. The results showed that 27 fetuses (35%) were infected with these organisms. Infection with B. melitensis, C. burnetii and S. abortusovis were identified respectively in 15 (19.2%), 13 (16.6%) and 1 (1.3%) fetus. Logistic regression analysis showed that infection with B. melitensis in male fetuses is higher than females (OR=3.73, P=0.040), also infection with C. burnetii in ≤2 years' ewes (OR=0.047, P=0.009) and 2-5 years' ewes (OR=0.197, P=0.069) is lower than ≥5 years' ewes.
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Affiliation(s)
- H. Mahdavi Roshan
- Resident of Theriogenology, Department of Theriogenology and Obstetrics, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - D. Saadati
- Department of Nutrition and Animal Breeding, Faculty of Veterinary Medicine, University of Zabol, Zabol, Iran
| | - M. Najimi
- Department of Pathobiology, Faculty of Veterinary Medicine, University of Zabol, Zabol, Iran
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Muema J, Thumbi SM, Obonyo M, Wanyoike S, Nanyingi M, Osoro E, Bitek A, Karanja S. Seroprevalence and Factors Associated with Coxiella burnetii Infection in Small Ruminants in Baringo County, Kenya. Zoonoses Public Health 2017; 64:e31-e43. [PMID: 28117947 DOI: 10.1111/zph.12342] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Indexed: 01/06/2023]
Abstract
To improve estimates of C. burnetii epidemiology in Kenya, a survey was undertaken in small ruminants in Baringo County, where acute cases of Q fever in humans had been reported in 2014. From 140 household herds selected, 508 (60.5%) goats and 332 (39.5%) sheep were included and an indirect ELISA assay for C. burnetii IgG antibodies performed. In addition, epidemiological information at both herd and animal level was collected. Generalized mixed-effects multivariable logistic model using herd as the random effect was used to determine variables correlated to the outcome. Overall seroprevalence was 20.5% (95% CI: 17.8%, 23.3%). Goats had 26.0% (95% CI: 22.2%, 30.0%) compared to sheep 12.2% (95% CI: 8.7%, 16.0%). Nomadic pastoralism, goats and older animals (>1 year) were associated with greater risk of C. burnetii seropositivity (P = ≤0.05). Heterogeneity in C. burnetii seropositivity was observed across the sublocations (P = 0.028). Evidence of C. burnetii exposure in small ruminants revealed poses a potential risk of exposure to the people living in close proximity to the animals. We recommended integrated animal-human surveillance and socio-economic studies for C. burnetii, to aid our understanding of the risk of transmission between the animals and humans, and in the design of prevention and control strategies for the disease in the region.
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Affiliation(s)
- J Muema
- Field Epidemiology and Laboratory Training Program (FELTP), Nairobi, Kenya.,Zoonotic Disease Unit, Directorate of Veterinary Service, Nairobi, Kenya.,College of Health Sciences, Jomo Kenyatta University of Agriculture & Technology, Nairobi, Kenya
| | - S M Thumbi
- Paul G. Allen School for Global Animal Health, Washington State University, Pullman, WA, USA.,Center for Global Health Research, Kenya Medical Research Institute, Kenya
| | - M Obonyo
- Field Epidemiology and Laboratory Training Program (FELTP), Nairobi, Kenya.,Zoonotic Disease Unit, Directorate of Veterinary Service, Nairobi, Kenya
| | - S Wanyoike
- Directorate of Veterinary Services, Nairobi, Kenya
| | - M Nanyingi
- Department of Public Health, Pharmacology and Toxicology, University of Nairobi, Kenya.,Department of Biomedical Sciences, Colorado State University, Fort Collins, CO, USA
| | - E Osoro
- Zoonotic Disease Unit, Department of Preventive and Promotive Health Services, Ministry of Health, Nairobi, Kenya
| | - A Bitek
- Zoonotic Disease Unit, Directorate of Veterinary Service, Nairobi, Kenya
| | - S Karanja
- College of Health Sciences, Jomo Kenyatta University of Agriculture & Technology, Nairobi, Kenya
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Browne AS, Fèvre EM, Kinnaird M, Muloi DM, Wang CA, Larsen PS, O'Brien T, Deem SL. Serosurvey of Coxiella burnetii (Q fever) in Dromedary Camels (Camelus dromedarius) in Laikipia County, Kenya. Zoonoses Public Health 2017; 64:543-549. [PMID: 28176495 PMCID: PMC5655913 DOI: 10.1111/zph.12337] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Indexed: 12/19/2022]
Abstract
Dromedary camels (Camelus dromedarius) are an important protein source for people in semi-arid and arid regions of Africa. In Kenya, camel populations have grown dramatically in the past few decades resulting in the potential for increased disease transmission between humans and camels. An estimated four million Kenyans drink unpasteurized camel milk, which poses a disease risk. We evaluated the seroprevalence of a significant zoonotic pathogen, Coxiella burnetii (Q fever), among 334 camels from nine herds in Laikipia County, Kenya. Serum testing revealed 18.6% positive seroprevalence of Coxiella burnetii (n = 344). Increasing camel age was positively associated with C. burnetii seroprevalence (OR = 5.36). Our study confirmed that camels living in Laikipia County, Kenya, have been exposed to the zoonotic pathogen, C. burnetii. Further research to evaluate the role of camels in disease transmission to other livestock, wildlife and humans in Kenya should be conducted.
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Affiliation(s)
- A. S. Browne
- Molecular Epidemiology and Public Health LaboratoryHopkirk Research InstituteMassey UniversityPalmerston NorthNZ
| | - E. M. Fèvre
- Institute of Infection and Global HealthUniversity of LiverpoolNestonUK
- International Livestock Research InstituteNairobiKE
| | | | - D. M. Muloi
- Centre for Immunity, Infection and EvolutionUniversity of EdinburghEdinburghUK
| | - C. A. Wang
- College of Veterinary MedicineNorth Carolina State UniversityRaleighNCUSA
| | - P. S. Larsen
- Department of EpidemiologySchool of Public HealthUniversity of MichiganAnn ArborMIUSA
| | - T. O'Brien
- Mpala Research CentreNanyukiKE
- Wildlife Conservation SocietyGlobal Conservation ProgramsBronx, New YorkNYUSA
| | - S. L. Deem
- Saint Louis Zoo Institute for Conservation MedicineSaint LouisMOUSA
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Ndeereh D, Muchemi G, Thaiyah A, Otiende M, Angelone-Alasaad S, Jowers MJ. Molecular survey of Coxiella burnetii in wildlife and ticks at wildlife-livestock interfaces in Kenya. EXPERIMENTAL & APPLIED ACAROLOGY 2017; 72:277-289. [PMID: 28593481 DOI: 10.1007/s10493-017-0146-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 05/27/2017] [Indexed: 06/07/2023]
Abstract
Coxiella burnetii is the causative agent of Q fever, a zoonotic disease of public health importance. The role of wildlife and their ticks in the epidemiology of C. burnetii in Kenya is unknown. This study analysed the occurrence and prevalence of the pathogen in wildlife and their ticks at two unique wildlife-livestock interfaces of Laikipia and Maasai Mara National Reserve (MMNR) with the aim to determine the potential risk of transmission to livestock and humans. Blood from 79 and 73 animals in Laikipia and MMNR, respectively, and 756 and 95 ixodid ticks in each of the areas, respectively, was analysed. Ticks were pooled before analyses into 137 and 29 samples in Laikipia and MMNR, respectively, of one to eight non-engorged ticks according to species and animal host. Real-time PCR amplifying the repetitive insertion element IS1111a of the transposase gene was used to detect C. burnetii DNA. Although none of the animals and ticks from MMNR tested positive, ticks from Laikipia had an overall pooled prevalence of 2.92% resulting in a maximum-likelihood estimate of prevalence of 0.54%, 95% CI 0.17-1.24. Ticks positive for C. burnetii DNA belonged to the genus Rhipicephalus at a pooled prevalence of 2.96% (maximum-likelihood estimate of prevalence of 0.54%, 95% CI 0.17-1.26). These ticks were Rhipicephalus appendiculatus, R. pulchellus and R. evertsi at pooled prevalence of 3.77, 3.03 and 2.04%, respectively. The presence of C. burnetii in ticks suggests circulation of the pathogen in Laikipia and demonstrates they may play a potential role in the epidemiology of Q fever in this ecosystem. The findings warrant further studies to understand the presence of C. burnetii in domestic animals and their ticks within both study areas.
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Affiliation(s)
- David Ndeereh
- Department of Veterinary Services, Kenya Wildlife Service, P.O. Box 40241-00100, Nairobi, Kenya.
| | - Gerald Muchemi
- Department of Public Health, Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Nairobi, P.O. Box 29053-00625, Nairobi, Kenya
| | - Andrew Thaiyah
- Department of Clinical Studies, Faculty of Veterinary Medicine, University of Nairobi, P.O. Box 29053-00625, Nairobi, Kenya
| | - Moses Otiende
- Department of Veterinary Services, Kenya Wildlife Service, P.O. Box 40241-00100, Nairobi, Kenya
| | - Samer Angelone-Alasaad
- Institute of Evolutionary Biology and Environmental Studies (IEU), University of Zürich, Winterthurerstrasse 190, 8057, Zurich, Switzerland
| | - Michael J Jowers
- CIBIO/InBIO (Centro de Investigação em Biodiversidade e Recursos Genéticos), Universidade do Porto, Campus Agrario De Vairão, 4485-661, Vairão, Portugal.
- National Institute of Ecology, 1210, Geumgang-ro, Maseo-myeon, Seocheon-gun, Chungcheongnam-do, 33657, Korea.
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Fèvre EM, de Glanville WA, Thomas LF, Cook EAJ, Kariuki S, Wamae CN. An integrated study of human and animal infectious disease in the Lake Victoria crescent small-holder crop-livestock production system, Kenya. BMC Infect Dis 2017; 17:457. [PMID: 28666412 PMCID: PMC5493856 DOI: 10.1186/s12879-017-2559-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 06/20/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The neglected zoonotic diseases (NZD) are an understudied group that are a major cause of illness throughout the developing world. In general, little is known about the prevalence and burden of NZDs in affected communities, particularly in relation to other infectious diseases with which they are often co-endemic. We describe the design and descriptive epidemiological outputs from an integrated study of human and animal zoonotic and non-zoonotic disease in a rural farming community in western Kenya. METHODS This cross-sectional survey involved 2113 people, their cattle (n = 983) and pigs (n = 91). People and animals were tested for infection or exposure to a wide range of zoonotic and non-zoonotic pathogens. Prevalence estimates, with adjustment for the complex study design, were derived. Evidence for spatial clustering in exposure or infection was identified using the spatial scan statistic. RESULTS There was a high prevalence of human parasitism in the community, particularly with hookworm (Ancylostoma duodenale or Necator americanus) (36.3% (95% CI 32.8-39.9)), Entamoeba histolytica/dispar (30.1% (95% CI 27.5-32.8)), and Plasmodium falciparum (29.4% (95% CI 26.8-32.0)). Human infection with Taenia spp. was also prevalent (19.7% (95% CI 16.7-22.7)), while exposure to other zoonotic pathogens was comparatively rarer (Brucella spp., 0.6% (95% CI 0.2-0.9); Coxiella burnetii, 2.2% (95% CI 1.5-2.9); Rift Valley fever, 0.5% (95% CI 0.2-0.8)). A low prevalence of exposure to Brucella spp. was observed in cattle (0.26% (95% CI 0-0.56). This was higher for Rift Valley fever virus (1.4% (95% CI 0.5-2.22)) and C. burnetii (10.0% (95% CI 7.7-12.2)). The prevalence of Taenia spp. cysticercosis was 53.5% (95% CI 48.7-58.3) in cattle and 17.2% (95% CI 9.1-25.3) in pigs. Mycobacterium bovis infection was found in 2.2% of cattle (95% CI 1.3-3.2), while the prevalence of infection with Mycobacterium spp. was 8.2% (95% CI 6.8-9.6) in people. CONCLUSION Zoonotic infections in people and animals occur in the context of a wide range of co-endemic pathogens in a rural community in western Kenya. The wide diversity of pathogens under study provides a unique opportunity to explore the distribution and determinants of infection in a multi-pathogen, multi-host system.
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Affiliation(s)
- Eric M. Fèvre
- Institute of Infection and Global Health, University of Liverpool, Leahurst Campus, Neston, CH64 7TE UK
- International Livestock Research Institute (ILRI), Old Naivasha Road, PO Box 30709-00100, Nairobi, Kenya
| | - William A. de Glanville
- International Livestock Research Institute (ILRI), Old Naivasha Road, PO Box 30709-00100, Nairobi, Kenya
- Centre for Immunity, Infection and Evolution, Institute for Immunology and Infection Research, School of Biological Sciences, Kings Buildings, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JT UK
| | - Lian F. Thomas
- International Livestock Research Institute (ILRI), Old Naivasha Road, PO Box 30709-00100, Nairobi, Kenya
- Centre for Immunity, Infection and Evolution, Institute for Immunology and Infection Research, School of Biological Sciences, Kings Buildings, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JT UK
| | - Elizabeth A. J. Cook
- International Livestock Research Institute (ILRI), Old Naivasha Road, PO Box 30709-00100, Nairobi, Kenya
- Centre for Immunity, Infection and Evolution, Institute for Immunology and Infection Research, School of Biological Sciences, Kings Buildings, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JT UK
| | - Samuel Kariuki
- Centre for Microbiology Research, Kenya Medical Research Institute, PO Box 43640, Nairobi, Kenya
| | - Claire N. Wamae
- Centre for Microbiology Research, Kenya Medical Research Institute, PO Box 43640, Nairobi, Kenya
- Current address: Department of Microbiology, School of Medicine, Mount Kenya University, PO BOX 342-00100, Thika, Kenya
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46
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Njeru J, Tomaso H, Mertens K, Henning K, Wareth G, Heller R, Kariuki S, Fèvre EM, Neubauer H, Pletz MW. Serological evidence of Francisella tularensis in febrile patients seeking treatment at remote hospitals, northeastern Kenya, 2014-2015. New Microbes New Infect 2017; 19:62-66. [PMID: 28721222 PMCID: PMC5498284 DOI: 10.1016/j.nmni.2017.05.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 05/16/2017] [Accepted: 05/29/2017] [Indexed: 11/02/2022] Open
Abstract
Tularaemia is a highly contagious infectious zoonosis caused by the bacterial agent Francisella tularensis. The aim of this study was to investigate the presence of antibodies to F. tularensis in febrile patients in northeastern Kenya. During 2014-2015, 730 patients were screened for anti-F. tularensis antibodies using a combination of ELISA and Western blot. Twenty-seven (3.7%) individuals were positive for F. tularensis. Tularaemia was not suspected by the treating clinicians in any of them. Our results suggest that tularaemia may be present in Kenya but remain unreported, and emphasizes the need for local clinicians to broaden their diagnostic repertoire when evaluating patients with undifferentiated febrile illness.
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Affiliation(s)
- J Njeru
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institute, Jena, Germany.,Centre for Infectious Diseases and Infection Control, Jena University Hospital, Jena, Germany.,Centre for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - H Tomaso
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institute, Jena, Germany
| | - K Mertens
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institute, Jena, Germany
| | - K Henning
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institute, Jena, Germany
| | - G Wareth
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institute, Jena, Germany.,Faculty of Veterinary Medicine, Benha University, Moshtohor, Egypt
| | - R Heller
- Institute for Molecular Cell Biology, Center for Molecular Biomedicine, Friedrich Schiller University of Jena, Jena, Germany
| | - S Kariuki
- Centre for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - E M Fèvre
- Institute of Infection and Global Health, University of Liverpool, Liverpool, UK.,International Livestock Research Institute, Nairobi, Kenya
| | - H Neubauer
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler-Institute, Jena, Germany
| | - M W Pletz
- Centre for Infectious Diseases and Infection Control, Jena University Hospital, Jena, Germany
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47
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de Glanville WA, Conde-Álvarez R, Moriyón I, Njeru J, Díaz R, Cook EAJ, Morin M, Bronsvoort BMDC, Thomas LF, Kariuki S, Fèvre EM. Poor performance of the rapid test for human brucellosis in health facilities in Kenya. PLoS Negl Trop Dis 2017; 11:e0005508. [PMID: 28388625 PMCID: PMC5413359 DOI: 10.1371/journal.pntd.0005508] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 05/02/2017] [Accepted: 03/20/2017] [Indexed: 02/07/2023] Open
Abstract
Human brucellosis is considered to be an important but typically under-diagnosed cause of febrile illness in many low and middle-income countries. In Kenya, and throughout East Africa, laboratory diagnosis for the disease is based primarily on the febrile antigen Brucella agglutination test (FBAT), yet few studies of the diagnostic accuracy of this test exist. Assessment of the performance of the FBAT is essential for its appropriate clinical use, as well as for evaluating surveillance data reported by public health systems. To assess FBAT performance, we collected sera from people with symptoms compatible with brucellosis attending two health facilities in Busia County, Kenya. Sera were tested using the FBAT and results compared with those from the Rose Bengal Test (RBT), an assay with well-known performance characteristics. Positives on either test were confirmed using the classical serum agglutination test (SAT)-Coombs test combination and a rapid IgM/IgG lateral flow immunochromatography assay (LFA). A questionnaire focussing on known risk factors for exposure to Brucella spp. was also conducted, and relationships with FBAT positivity examined using logistic regression. Out of 825 recruited individuals, 162 (19.6%) were classified as positive using the FBAT. In contrast, only eight (1.0%) were positive using the RBT. Of the 162 FBAT positives, one (0.62%) had an atypical agglutination in SAT and three (1.9%) showed low Coombs titres. Out of 148 FBAT positive individuals tested using the LFA, five (3.4%) were IgM positive and none were IgG positive. Poor or no correlation was observed between FBAT results and most established risk factors for Brucella infection. We observed substantial disagreement between the FBAT and a number of well-known serological tests, with the majority of reactive FBAT results appearing to be false positives. Poor FBAT specificity, combined with a lack of confirmatory testing, strongly suggests overdiagnosis of brucellosis is common in this low prevalence setting. This is expected to have important economic impacts on affected patients subjected to the long and likely unnecessary courses of multiple antibiotics required for treatment of the disease. Brucellosis is a debilitating disease of people caused by infection with one of a number of different Brucella species. In almost all cases, people acquire the infection through exposure to infected animals or contaminated animal products. Human brucellosis is well known for its wide range of symptoms, and is often clinically indistinguishable from other infectious diseases, such as malaria or typhoid. Diagnosing the disease therefore typically relies on laboratory tests. A wide range of tests are available, but little is known about the accuracy of the principal test used in Government health facilities in Kenya, the febrile Brucella agglutination test (FBAT). In this study, we identified people with symptoms compatible with brucellosis attending health centres in Kenya. By comparing results from the FBAT performed on samples collected from these individuals with the results from a range of well-established diagnostic tests, we were able to show that the FBAT produces large numbers of false positive results. We expect that this leads to a high levels of overdiagnosis of brucellosis in some parts of Kenya. Treatment of the disease involves multiple weeks of multiple antibiotics, and these incorrect diagnoses may have important and unnecessary negative impacts on affected patients.
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Affiliation(s)
- William A de Glanville
- Centre for Immunity, Infection and Evolution, Institute for Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom.,International Livestock Research Institute, Nairobi, Kenya
| | - Raquel Conde-Álvarez
- Institute for Tropical Health, Navarra Institute for Sanitary Research and Department of Microbiology and Parasitology, Medical School, University of Navarra, Pamplona, Spain
| | - Ignacio Moriyón
- Institute for Tropical Health, Navarra Institute for Sanitary Research and Department of Microbiology and Parasitology, Medical School, University of Navarra, Pamplona, Spain
| | - John Njeru
- Centre for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya.,Institute for Bacterial Infections and Zoonoses, Friedrich Loeffler Institute, Berlin, Germany
| | - Ramón Díaz
- Institute for Tropical Health, Navarra Institute for Sanitary Research and Department of Microbiology and Parasitology, Medical School, University of Navarra, Pamplona, Spain
| | - Elizabeth A J Cook
- Centre for Immunity, Infection and Evolution, Institute for Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom.,International Livestock Research Institute, Nairobi, Kenya
| | - Matilda Morin
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Barend M de C Bronsvoort
- Epidemiology, Economics and Risk Assessment Group, The Roslin Institute, University of Edinburgh, Edinburgh, United Kingdom
| | - Lian F Thomas
- Centre for Immunity, Infection and Evolution, Institute for Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom.,International Livestock Research Institute, Nairobi, Kenya
| | - Samuel Kariuki
- Centre for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
| | - Eric M Fèvre
- International Livestock Research Institute, Nairobi, Kenya.,Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
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Esmaeili S, Golzar F, Ayubi E, Naghili B, Mostafavi E. Acute Q fever in febrile patients in northwestern of Iran. PLoS Negl Trop Dis 2017; 11:e0005535. [PMID: 28394892 PMCID: PMC5398717 DOI: 10.1371/journal.pntd.0005535] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 04/20/2017] [Accepted: 03/28/2017] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Q fever is an endemic disease in different parts of Iran. This study aimed to investigate the prevalence of acute Q fever disease among at-risk individuals in northwestern Iran. METHODOLOGY An etiological study was carried out in 2013 in Tabriz County. A total of 116 individuals who were in contact with livestock and had a nonspecific febrile illness were enrolled in the study. IgG phase II antibodies against Coxiella burnetii were detected using ELISA. PRINCIPAL FINDINGS The prevalence of acute Q fever was 13.8% (95% confidence interval [CI]: 8.0, 21.0%). Headache (87.5%) and fatigue and weakness (81.3%) were the dominant clinical characteristics among patients whit acute Q fever. Acute lower respiratory tract infection and chills were poorly associated with acute Q fever. Furthermore, 32% (95% CI: 24, 41%) of participants had a history of previous exposure to Q fever agent (past infection). Consumption of unpasteurized dairy products was a weak risk factor for previous exposure to C. burnetii. CONCLUSION This study identified patients with acute Q fever in northwestern of Iran. The evidence from this study and previous studies conducted in different regions of Iran support this fact that Q fever is one of the important endemic zoonotic diseases in Iran and needs due attention by clinical physicians and health care system.
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Affiliation(s)
- Saber Esmaeili
- Research Centre for Emerging and Reemerging Infectious Diseases, National Reference Laboratory for Plague, Tularemia and Q Fever, Pasteur Institute of Iran, Akanlu, Kabudar-Ahang, Hamadan, Iran
- Department of Epidemiology and Biostatistics, Pasteur Institute of Iran, Tehran, Iran
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Farhad Golzar
- Institute of Natural and Mathematical Science, Massey University, Auckland, New Zealand
| | - Erfan Ayubi
- Research Centre for Emerging and Reemerging Infectious Diseases, National Reference Laboratory for Plague, Tularemia and Q Fever, Pasteur Institute of Iran, Akanlu, Kabudar-Ahang, Hamadan, Iran
- Department of Epidemiology and Biostatistics, School of Public Health and Health Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Behrooz Naghili
- Research Center of Infectious Diseases and Tropical Medicine, Faculty of Medicine, Tabriz university of Medical Science, Tabriz, Iran
| | - Ehsan Mostafavi
- Research Centre for Emerging and Reemerging Infectious Diseases, National Reference Laboratory for Plague, Tularemia and Q Fever, Pasteur Institute of Iran, Akanlu, Kabudar-Ahang, Hamadan, Iran
- Department of Epidemiology and Biostatistics, Pasteur Institute of Iran, Tehran, Iran
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49
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Maina AN, Farris CM, Odhiambo A, Jiang J, Laktabai J, Armstrong J, Holland T, Richards AL, O'Meara WP. Q Fever, Scrub Typhus, and Rickettsial Diseases in Children, Kenya, 2011-2012. Emerg Infect Dis 2016; 22:883-6. [PMID: 27088502 PMCID: PMC4861507 DOI: 10.3201/eid2205.150953] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
To increase knowledge of undifferentiated fevers in Kenya, we tested paired serum samples from febrile children in western Kenya for antibodies against pathogens increasingly recognized to cause febrile illness in Africa. Of patients assessed, 8.9%, 22.4%, 1.1%, and 3.6% had enhanced seroreactivity to Coxiella burnetii, spotted fever group rickettsiae, typhus group rickettsiae, and scrub typhus group orientiae, respectively.
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50
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Wardrop NA, Thomas LF, Cook EAJ, de Glanville WA, Atkinson PM, Wamae CN, Fèvre EM. The Sero-epidemiology of Coxiella burnetii in Humans and Cattle, Western Kenya: Evidence from a Cross-Sectional Study. PLoS Negl Trop Dis 2016; 10:e0005032. [PMID: 27716804 PMCID: PMC5055308 DOI: 10.1371/journal.pntd.0005032] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 09/09/2016] [Indexed: 12/31/2022] Open
Abstract
Evidence suggests that the intracellular bacterial pathogen Coxiella burnetii (which causes Q fever) is widespread, with a near global distribution. While there has been increasing attention to Q fever epidemiology in high-income settings, a recent systematic review highlighted significant gaps in our understanding of the prevalence, spatial distribution and risk factors for Q fever infection across Africa. This research aimed to provide a One Health assessment of Q fever epidemiology in parts of Western and Nyanza Provinces, Western Kenya, in cattle and humans. A cross-sectional survey was conducted: serum samples from 2049 humans and 955 cattle in 416 homesteads were analysed for C. burnetii antibodies. Questionnaires covering demographic, socio-economic and husbandry information were also administered. These data were linked to environmental datasets based on geographical locations (e.g., land cover). Correlation and spatial-cross correlation analyses were applied to assess the potential link between cattle and human seroprevalence. Multilevel regression analysis was used to assess the relationships between a range of socio-economic, demographic and environmental factors and sero-positivity in both humans and animals. The overall sero-prevalence of C. burnetii was 2.5% in humans and 10.5% in cattle, but we found no evidence of correlation between cattle and human seroprevalence either within households, or when incorporating spatial proximity to other households in the survey. Multilevel modelling indicated the importance of several factors for exposure to the organism. Cattle obtained from market (as opposed to those bred in their homestead) and those residing in areas with lower precipitation levels had the highest sero-prevalence. For humans, the youngest age group had the highest odds of seropositivity, variations were observed between ethnic groups, and frequent livestock contact (specifically grazing and dealing with abortion material) was also a risk factor. These results illustrate endemicity of C. burnetii in western Kenya, although prevalence is relatively low. The analysis indicates that while environmental factors may play a role in cattle exposure patterns, human exposure patterns are likely to be driven more strongly by livestock contacts. The implication of livestock markets in cattle exposure risks suggests these may be a suitable target for interventions.
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Affiliation(s)
- Nicola A. Wardrop
- Geography and Environment, University of Southampton, Southampton, United Kingdom
| | - Lian F. Thomas
- Centre for Immunity, Infection and Evolution, University of Edinburgh, Edinburgh, United Kingdom
- International Livestock Research Institute, Nairobi, Kenya
| | - Elizabeth A. J. Cook
- Centre for Immunity, Infection and Evolution, University of Edinburgh, Edinburgh, United Kingdom
- International Livestock Research Institute, Nairobi, Kenya
| | - William A. de Glanville
- Centre for Immunity, Infection and Evolution, University of Edinburgh, Edinburgh, United Kingdom
- International Livestock Research Institute, Nairobi, Kenya
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, United Kingdom
| | - Peter M. Atkinson
- Geography and Environment, University of Southampton, Southampton, United Kingdom
- Faculty of Science and Technology, Lancaster University, Lancaster, United Kingdom
- School of Geography, Archaeology and Palaeoecology, Queen's University Belfast, Belfast, United Kingdom
| | - Claire N. Wamae
- Centre for Microbiology Research, Kenya Medical Research Institute, Nairobi, Kenya
- Mount Kenya University, Thika, Kenya
| | - Eric M. Fèvre
- International Livestock Research Institute, Nairobi, Kenya
- Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
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