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Rajkhowa S, Sonowal J, Borthakur U, Pegu SR, Deb R, Das PJ, Sengar GS, Gupta VK. Meta-Analysis of the Prevalence of Porcine Zoonotic Bacterial Pathogens in India: A 13-Year (2010-2023) Study. Pathogens 2023; 12:1266. [PMID: 37887783 PMCID: PMC10610365 DOI: 10.3390/pathogens12101266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/19/2023] [Accepted: 10/19/2023] [Indexed: 10/28/2023] Open
Abstract
The presence of bacterial pathogens such as Brucella spp., Clostridium spp., E. coli, Listeria monocytogenes, Salmonella spp., Staphylococcus spp., and Streptococcus suis not only hampers pig production but also carries significant zoonotic implications. The present study aims to conduct a comprehensive meta-analysis spanning over 13 years (2010-2023) to ascertain the prevalence of these zoonotic bacterial pathogens in Indian pig populations. The study seeks to synthesize data from diverse geographic regions within India and underscores the relevance of the One Health framework. A systematic search of electronic databases was meticulously performed. Inclusion criteria encompassed studies detailing zoonotic bacterial pathogen prevalence in pigs within India during the specified timeframe. Pertinent information including authors, publication year, geographical location, sampling techniques, sample sizes, and pathogen-positive case counts were meticulously extracted. The meta-analysis of zoonotic bacterial pathogens in Indian pig populations (2010-2023) unveiled varying prevalence rates: 9% Brucella spp., 22% Clostridium spp., 19% E. coli, 12% Listeria monocytogenes, 10% Salmonella spp. and Streptococcus suis, and 24% Staphylococcus spp. The application of random effects further revealed additional variability: 6% Brucella spp., 23% Clostridium spp., 24% E. coli, 14% Listeria monocytogenes, 10% Salmonella spp. and Streptococcus suis, and 35% Staphylococcus spp. Notably, the observed heterogeneity (I2) varied significantly from 87% to 99%. The meta-analysis findings underscore the pervasive nature of these diseases throughout India's pig populations, accentuating the substantial impact of these pathogens on pig health and the potential for zoonotic transmission. The present study reinforces the importance of the adoption of a comprehensive One Health approach that acknowledges the intricate interplay between animal, human and environmental health.
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Affiliation(s)
- Swaraj Rajkhowa
- ICAR-National Research Centre on Pig, Rani, Guwahati 781131, Assam, India; (J.S.); (S.R.P.); (R.D.); (P.J.D.); (G.S.S.); (V.K.G.)
| | - Joyshikh Sonowal
- ICAR-National Research Centre on Pig, Rani, Guwahati 781131, Assam, India; (J.S.); (S.R.P.); (R.D.); (P.J.D.); (G.S.S.); (V.K.G.)
| | - Udipta Borthakur
- Animal Husbandry and Veterinary Department, Guwahati 781003, Assam, India;
| | - Seema Rani Pegu
- ICAR-National Research Centre on Pig, Rani, Guwahati 781131, Assam, India; (J.S.); (S.R.P.); (R.D.); (P.J.D.); (G.S.S.); (V.K.G.)
| | - Rajib Deb
- ICAR-National Research Centre on Pig, Rani, Guwahati 781131, Assam, India; (J.S.); (S.R.P.); (R.D.); (P.J.D.); (G.S.S.); (V.K.G.)
| | - Pranab Jyoti Das
- ICAR-National Research Centre on Pig, Rani, Guwahati 781131, Assam, India; (J.S.); (S.R.P.); (R.D.); (P.J.D.); (G.S.S.); (V.K.G.)
| | - Gyanendra Singh Sengar
- ICAR-National Research Centre on Pig, Rani, Guwahati 781131, Assam, India; (J.S.); (S.R.P.); (R.D.); (P.J.D.); (G.S.S.); (V.K.G.)
| | - Vivek Kumar Gupta
- ICAR-National Research Centre on Pig, Rani, Guwahati 781131, Assam, India; (J.S.); (S.R.P.); (R.D.); (P.J.D.); (G.S.S.); (V.K.G.)
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Rebollada-Merino A, Pérez-Sancho M, Rodríguez-Bertos A, García N, Martínez I, Navarro A, Domínguez L, García-Seco T. Environment and Offspring Surveillance in Porcine Brucellosis. Front Vet Sci 2022; 9:915692. [PMID: 35799841 PMCID: PMC9253667 DOI: 10.3389/fvets.2022.915692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
Porcine brucellosis, caused by Brucella suis (B. suis), is a notifiable disease causing significant economic losses in production systems. Most infected pigs may act as carriers and shed B. suis even if asymptomatic. This can contribute to environmental persistence, thus hindering control efforts. Here, the environment and the offspring were investigated during and after a B. suis outbreak at a sow breeding farm. The diagnosis of B. suis in sows (n = 1,140) was performed by culture and polymerase chain reaction (PCR) from vaginal swabs, indirect enzyme-linked immunosorbent assay (I-ELISA) from sera, and brucellin skin test (BST). B. suis diagnosis in post-weaning pigs (n = 899) was performed by I-ELISA in sera and BST. The environmental surveillance programme was implemented by placing gauze sponges (n = 175) pre-hydrated in a surfactant and inactivating liquid for Brucella DNA detection by PCR in different farm areas. Our results showed that the offspring of infected sows reacted to in vivo techniques for B. suis. Furthermore, the offspring born during the outbreak displayed higher seropositivity (I-ELISA) and reactivity (BST) than those pigs born after. Brucella DNA was detected in pregnant sow areas, boxes, boots, and post-weaning pig areas. In addition, Brucella DNA environmental detection was higher during the B. suis outbreak than the post B. suis outbreak. The environmental approach has proven to be a simple, practical, valuable, and safe method to detect and monitor B. suis. These results suggest a role of the environment and the offspring that should be considered in porcine brucellosis surveillance and control programmes.
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Affiliation(s)
- Agustín Rebollada-Merino
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
- Department of Internal Medicine and Animal Surgery, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Marta Pérez-Sancho
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
- *Correspondence: Marta Pérez-Sancho
| | - Antonio Rodríguez-Bertos
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
- Department of Internal Medicine and Animal Surgery, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Nerea García
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Irene Martínez
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
| | - Alejandro Navarro
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
| | - Lucas Domínguez
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Teresa García-Seco
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
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Elmonir W, Abdel-Hamid NH, Hamdy MER, Beleta EIM, El-Diasty M, Melzer F, Wareth G, Neubauer H. Isolation and molecular confirmation of Brucella suis biovar 2 from slaughtered pigs: an unanticipated biovar from domestic pigs in Egypt. BMC Vet Res 2022; 18:224. [PMID: 35698071 PMCID: PMC9195200 DOI: 10.1186/s12917-022-03332-2] [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: 01/29/2022] [Accepted: 05/11/2022] [Indexed: 11/10/2022] Open
Abstract
Background Brucella suis is a zoonotic pathogen with a serious impact on public health and the pig industry worldwide. Information regarding B. suis in pigs in Egypt is scarce. This study aimed to investigate the prevalence of B. suis in slaughtered domestic pigs at El-Basatin abattoir in Cairo, Egypt. A total of 1,116 domestic pigs slaughtered in 2020 were sampled for Brucella isolation and identification. Identified Brucella isolates were molecularly confirmed at species, and biovar levels using Bruce ladder PCR and Suis ladder multiplex PCR. Additionally, high-risk practices of 16 abattoir workers (4 veterinarians, 10 butchering and evisceration workers, and 2 scalding workers) were investigated using a pre-piloted structured questionnaire. Results Brucella isolates were recovered from 1.3% of examined pigs (n = 14) at consistently low rates (1.1—2.9%) across the year of sampling from February to December 2020. All isolates were confirmed as B. suis biovar (bv) 2. Remarkably, 92.9% (13/14) of isolates showed atypical ability to produce H2S and hence were considered as B. suis bv2 atypical phenotype. The prevalence was higher in males (1.8%) than in females (0.9). However, this difference was not significant (Odds ratio = 1.9; CI 95% 0.7 – 5.7; P = 0.2). No detectable pathological lesions were associated with B. suis bv2 infection in examined pigs. All strains were isolated from cervical lymph nodes, highlighting a potential oral transmission. High-risk practices were recorded among swine abattoir workers in this study: 75% do not wear gloves or disinfect their knives daily, and 18.8% were willing to work with open wound injuries. Conclusions To the best of our knowledge, this is the first isolation of B. suis bv2 in Egypt. Detection of H2S producing B. suis bv2 atypical phenotype is alarming as it may result in misinterpretation of these isolates as highly human pathogenic B. suis bv1 in Egypt and possibly elsewhere. Further epidemiological tracing studies are crucial for the detection of the origin of this biovar. Including pigs in the national surveillance program of brucellosis, and an education program for swine abattoir workers about occupational risk of B. suis is a need in Egypt. Supplementary Information The online version contains supplementary material available at 10.1186/s12917-022-03332-2.
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Affiliation(s)
- Walid Elmonir
- Department of Hygiene and Preventive Medicine (Zoonoses), Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Nour H Abdel-Hamid
- Agricultural Research Center, Animal Health Research Institute, P.O. Box 264-Giza, Cairo, 12618, Egypt
| | - Mahmoud E R Hamdy
- Agricultural Research Center, Animal Health Research Institute, P.O. Box 264-Giza, Cairo, 12618, Egypt
| | - Eman I M Beleta
- Agricultural Research Center, Animal Health Research Institute, P.O. Box 264-Giza, Cairo, 12618, Egypt
| | - Mohamed El-Diasty
- Agricultural Research Center, Animal Health Research Institute, P.O. Box 264-Giza, Cairo, 12618, Egypt
| | - Falk Melzer
- Institute of Bacterial Infections and Zoonosis, Friedrich-Loeffler Institut, Naumburger Str. 96a, 07743, Jena, Germany
| | - Gamal Wareth
- Institute of Bacterial Infections and Zoonosis, Friedrich-Loeffler Institut, Naumburger Str. 96a, 07743, Jena, Germany. .,Department of Bacteriology, Immunology, and Mycology, Faculty of Veterinary Medicine, Benha University, PO Box 13736, Toukh, Moshtohor, Egypt.
| | - Heinrich Neubauer
- Institute of Bacterial Infections and Zoonosis, Friedrich-Loeffler Institut, Naumburger Str. 96a, 07743, Jena, Germany
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Shome R, Kalleshamurthy T, Nagaraj C, Rathore Y, Ramanjinappa KD, Skariah S, Mohandoss N, Shome BR, Chanda MM, Hemadri D. Countrywide cross-sectional study of swine brucellosis sero-prevalence in Indian subcontinent during 2018-2019. Trop Anim Health Prod 2022; 54:114. [PMID: 35217897 DOI: 10.1007/s11250-022-03107-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 02/11/2022] [Indexed: 11/30/2022]
Abstract
Brucellosis in swine is a contagious disease with greater zoonotic potential caused by Brucella suis. The study describes PAN India swine brucellosis sero-prevalence in 5431 stratified random serum samples collected during 2018-2019 from 26 out of 29 states and two out of seven union territories. The serum samples were tested for anti-Brucella antibodies by indirect ELISA and overall, 4.33% apparent prevalence (AP) was recorded. The AP is ≥ 10% in five states among 26 states, P ≥ 50% in four districts out of 117 districts screened and cent percent prevalence in two epi units out of 264 sampled. Significantly high seropositivity (p < 0.05) in male (6.08%) than female pigs (3.46%) and in ≥ 24-month-old pigs indicated older and male pigs as potential carriers of the disease. The study recorded endemicity of the swine brucellosis in few regions of India requiring periodical surveillance for control of the disease. Brucella testing of boars before breeding and awareness among farmers and veterinarians will aid in reduction of disease burden in the absence of vaccination policy.
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Affiliation(s)
- Rajeswari Shome
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics (ICAR-NIVEDI), Yelahanka, Bengaluru, 560064, India.
| | - Triveni Kalleshamurthy
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics (ICAR-NIVEDI), Yelahanka, Bengaluru, 560064, India
| | - Chaitra Nagaraj
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics (ICAR-NIVEDI), Yelahanka, Bengaluru, 560064, India
| | - Yashaswini Rathore
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics (ICAR-NIVEDI), Yelahanka, Bengaluru, 560064, India
| | - Kavana Doddajala Ramanjinappa
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics (ICAR-NIVEDI), Yelahanka, Bengaluru, 560064, India
| | - Somy Skariah
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics (ICAR-NIVEDI), Yelahanka, Bengaluru, 560064, India
| | - Nagalingam Mohandoss
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics (ICAR-NIVEDI), Yelahanka, Bengaluru, 560064, India
| | - Bibek Ranjan Shome
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics (ICAR-NIVEDI), Yelahanka, Bengaluru, 560064, India
| | - Mohammed Mudassar Chanda
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics (ICAR-NIVEDI), Yelahanka, Bengaluru, 560064, India
| | - Divakar Hemadri
- Indian Council of Agricultural Research-National Institute of Veterinary Epidemiology and Disease Informatics (ICAR-NIVEDI), Yelahanka, Bengaluru, 560064, India
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Shakuntala I, Milton AAP, Sanjukta RK, Kakoty K, Karam A, Dutta A, Puro K, Sen A, Das S, Ghatak S. Isolation and sero-genomo-epidemiological studies on Brucella infection in dairy cattle in Meghalaya, India. Comp Immunol Microbiol Infect Dis 2021; 78:101694. [PMID: 34418757 DOI: 10.1016/j.cimid.2021.101694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 08/02/2021] [Accepted: 08/03/2021] [Indexed: 11/16/2022]
Abstract
In this study, we report the serological, bacteriological and whole genome sequencing data of a 6 years study of Brucella abortus in Meghalaya, India. Investigation of 3060 sera samples indicated overall prevalence of 6.4% by Rose Bengal Plate Test and 10.7% by ELISA. Considerably higher prevalence was observed among milk samples (17.5%, n = 362) and in blood samples (37.7%, n = 262) by direct PCR. Clinical samples (n = 94) from late abortion cases yielded 11 B. abortus isolates. Multi-locus sequence typing indicated circulation of single sequence type, ST1. Whole genome sequencing (n = 8) and phylogenomic analysis revealed close clustering of majority of isolates in two clusters alongwith genomes from other countries, indicating global relatedness among B. abortus. Taken together, the results of our study revealed the putative hotspot of infection in the dairy-dominant districts of the state and also calls for concerted One Health based action for prevention and control of this zoonotic disease.
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Affiliation(s)
- I Shakuntala
- Division of Animal and Fisheries Sciences, ICAR Research Complex for Northeastern Hill Region, Umroi Road, Umiam, Meghalaya, 793103, India.
| | - A A P Milton
- Division of Animal and Fisheries Sciences, ICAR Research Complex for Northeastern Hill Region, Umroi Road, Umiam, Meghalaya, 793103, India
| | - R K Sanjukta
- Division of Animal and Fisheries Sciences, ICAR Research Complex for Northeastern Hill Region, Umroi Road, Umiam, Meghalaya, 793103, India
| | - Kaushik Kakoty
- Division of Animal and Fisheries Sciences, ICAR Research Complex for Northeastern Hill Region, Umroi Road, Umiam, Meghalaya, 793103, India
| | - Amarjit Karam
- Division of Animal and Fisheries Sciences, ICAR Research Complex for Northeastern Hill Region, Umroi Road, Umiam, Meghalaya, 793103, India
| | - Anirban Dutta
- Division of Animal and Fisheries Sciences, ICAR Research Complex for Northeastern Hill Region, Umroi Road, Umiam, Meghalaya, 793103, India
| | - K Puro
- Division of Animal and Fisheries Sciences, ICAR Research Complex for Northeastern Hill Region, Umroi Road, Umiam, Meghalaya, 793103, India
| | - Arnab Sen
- Division of Animal and Fisheries Sciences, ICAR Research Complex for Northeastern Hill Region, Umroi Road, Umiam, Meghalaya, 793103, India
| | - Samir Das
- Division of Animal and Fisheries Sciences, ICAR Research Complex for Northeastern Hill Region, Umroi Road, Umiam, Meghalaya, 793103, India.
| | - Sandeep Ghatak
- Division of Animal and Fisheries Sciences, ICAR Research Complex for Northeastern Hill Region, Umroi Road, Umiam, Meghalaya, 793103, India.
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Zhou Y, Meng Y, Ren Y, Liu Z, Li Z. A Retrospective Survey of the Abortion Outbreak Event Caused by Brucellosis at a Blue Fox Breeding Farm in Heilongjiang Province, China. Front Vet Sci 2021; 8:666254. [PMID: 34212019 PMCID: PMC8239190 DOI: 10.3389/fvets.2021.666254] [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: 02/09/2021] [Accepted: 04/06/2021] [Indexed: 12/20/2022] Open
Abstract
Brucellosis is a common zoonosis in China, resulting in abortion in animals. Outbreaks of abortion in blue foxes caused by Brucella infection have rarely been reported. In the present study, 3-5 mL blood samples collected from the femoral veins of 10 abortuses of blue foxes were assessed by RBPT (Rose Bengal plate test) and SAT (serum tube agglutination test) to preliminarily investigate the source of infection for the clustering of abortion events at a blue fox farm in Heilongjiang Province. Screening experiments showed that all 10 blood samples were positive in the RBPT, while only eight blood samples out of the 10 were positive in the SAT. Subsequently, 10 tissue samples (spleen, lungs, stomach contents, and afterbirth) from the same 10 foxes were assessed using AMOS (acronym for B. abortus, melitensis, ovis, and suis)-PCR (polymerase chain reaction), and sequencing analysis was performed on amplification products to verify the results of the serology survey. Results showed a spectral band of ~731 bp in these samples. BLAST showed sequences of AMOS-PCR products in this study to be 100% similar (E = 0.0) to sequences in B. melitensis strain from GenBank. These data preliminarily indicated that the blue fox's outbreak of abortion events was caused by brucellosis via the B. melitensis strain. Then 726 serum samples were tested by RBPT and SAT to determine the prevalence of brucellosis on the farm. A comprehensive epidemiological and reproductive status survey of the infected blue fox population was performed. The seropositive rate was found to be 67.90% (493/726) by RBPT and 41.32% (300/726) by SAT. The technicians had stopped feeding the foxes with chicken carcasses and instead fed them raw ground sheep organs (lungs, tracheae, placentae, and dead sheep fetuses) infected by B. meliteneis strains, and that this change in diet caused the outbreak of abortion events. The high abortion rate (55%) and low cub survival rate (65%) were the most distinctive features of the outbreak; these factors led to severe economic losses. Feeding cooked sheep/goat offal and strict breeding management is necessary for disease prevention.
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Affiliation(s)
- Yulong Zhou
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, China
| | - Ye Meng
- Department of Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yachao Ren
- Pharmacy Department, Harbin Medical University-Daqing, Daqing, China
| | - Zhiguo Liu
- Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
| | - Zhenjun Li
- Chinese Center for Disease Control and Prevention, National Institute for Communicable Disease Control and Prevention, Beijing, China
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Sabour S, Arzanlou M, Jeddi F, Azimi T, Hosseini-Asl S, Naghizadeh-Baghi A, Peeri Dogaheh H. Evaluating the efficiency of TaqMan real-time PCR and serological methods in the detection of Brucella spp. in clinical specimens collected from suspected patients in Ardabil, Iran. J Microbiol Methods 2020; 175:105982. [PMID: 32544484 DOI: 10.1016/j.mimet.2020.105982] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND This study aims to evaluate the efficiency of the TaqMan real-time PCR and serological methods in detecting Brucella spp. in clinical specimens that have been collected from suspected patients in Ardabil, Iran. METHODS In this cross-sectional study, a total of 113 consecutive patients suspected of brucellosis who were referred to the three hospitals in Ardabil province were selected. In the first step, the diagnosis of brucellosis was performed by serological methods including the Rose Bengal slide agglutination test, Wright test, 2-ME test, and BrucellaCapt test. In the next step, TaqMan real-time PCR with primer and probe targeting the bcsp31 gene was used for the detection of Brucella spp. Specificity, sensitivity, and positive and negative predictive values of the TaqMan real-time PCR assay were calculated. RESULTS Among 113 suspected patients with different clinical manifestations, the Rose Bengal slide agglutination test, Wright test, and 2-ME test were positive in 60 cases; however, the BrucellaCapt test titer was 1:160 for one patient. Six patients had high initial serum antibody titers; 2-ME titers of ≥1:640; STA titers of ≥1:1280; BrucellaCapt titers of ≥ 1:2560. Among positive cases, no correlation was observed among gender, age, and life (residence) in urban or rural areas. The TaqMan real-time PCR was positive in 35% of all 60 positive cases. The comparison of the results of the BrucellaCapt and TaqMan real-time PCR methods revealed that 19 out of 54 (35.2%) and 2 out of 6 (33.4%) BrucellaCapt positive cases with titers of >1:320 and ≤ 1:320 were positive, respectively. The sensitivities and specificities of the TaqMan real-time PCR assay were 49.1% and 100% respectively. CONCLUSION The sensitivity of the TaqMan real-time PCR assay was low in the diagnosis of brucellosis, while the BrucellaCapt test turned out to be a very valuable, sensitive, and specific test for the diagnosis of brucellosis in suspected patients and, thus, can provide reliable results in medical laboratories.
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Affiliation(s)
- Sahar Sabour
- Department of Microbiology, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran
| | - Mohsen Arzanlou
- Department of Microbiology, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran
| | - Farhad Jeddi
- Department of Genetics and pathology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Taher Azimi
- Pediatric Infections Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Department of Pathobiology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Saied Hosseini-Asl
- Molecular-Genetic Laboratory, Imam Khomeini Hospital, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Abbas Naghizadeh-Baghi
- Department of Physical Education and Sport Sciences, Faculty of Educational Sciences and Psychology, University of Mohaghegh Ardabili. Ardabil, Iran
| | - Hadi Peeri Dogaheh
- Department of Microbiology, School of Medicine, Ardabil University of Medical Science, Ardabil, Iran.
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8
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Khan AU, Melzer F, El-Soally SAGE, Elschner MC, Mohamed SA, Sayed Ahmed MA, Roesler U, Neubauer H, El-Adawy H. Serological and Molecular Identification of Brucella spp. in Pigs from Cairo and Giza Governorates, Egypt. Pathogens 2019; 8:pathogens8040248. [PMID: 31756893 PMCID: PMC6963660 DOI: 10.3390/pathogens8040248] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/14/2019] [Accepted: 11/16/2019] [Indexed: 12/03/2022] Open
Abstract
Brucellosis is considered as endemic disease of animals and humans since thousands of years in Egypt. However, brucellosis in pigs has never been reported in Egypt. Thus, serological and molecular assays were applied to detect anti-Brucella antibodies and DNA in serum samples collected from pigs. In total 331 blood samples collected from male and female pigs at slaughterhouses of Cairo and Giza governorates were investigated using Brucella c- and i-ELISA and Brucella real-time PCR. Anti-Brucella antibodies were detected in 16 (4.83%) and 36 (10.8%) sera by i-ELISA and c-ELISA, respectively. Brucella DNA was detected in 10 (3.02%) seropositive samples and identified as Brucella melitensis (7/10) and Brucella suis (3/10). A higher prevelance was found in boars. This is the first study investigating pig brucellosis in Egypt. The results of this study will raise awareness for brucellosis in these farm animals and will help to develop effective control strategies.
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Affiliation(s)
- Aman Ullah Khan
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743 Jena, Germany; (A.U.K.); (F.M.); (M.C.E.); (H.N.)
- Institute for Animal Hygiene and Environmental Health, Free University of Berlin, 14163 Berlin, Germany;
- Department of Pathobiology, College of Veterinary and Animal Sciences (Sub-Campus UVAS-Lahore), Jhang 35200, Pakistan
| | - Falk Melzer
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743 Jena, Germany; (A.U.K.); (F.M.); (M.C.E.); (H.N.)
| | | | - Mandy C. Elschner
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743 Jena, Germany; (A.U.K.); (F.M.); (M.C.E.); (H.N.)
| | | | - Mohamed Abdelmonem Sayed Ahmed
- Veterinary Service Department, Armed Forces Logistics Authority, Egyptian Armed Forces, 11765 Nasr City, Egypt (M.A.S.A.)
| | - Uwe Roesler
- Institute for Animal Hygiene and Environmental Health, Free University of Berlin, 14163 Berlin, Germany;
| | - Heinrich Neubauer
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743 Jena, Germany; (A.U.K.); (F.M.); (M.C.E.); (H.N.)
| | - Hosny El-Adawy
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses, 07743 Jena, Germany; (A.U.K.); (F.M.); (M.C.E.); (H.N.)
- Faculty of Veterinary Medicine, Kafrelsheikh University, 33516 Kafr El-Sheikh, Egypt
- Correspondence:
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