1
|
Pezzoni G, Calzolari M, Foglia EA, Bregoli A, Nardo AD, Sghaier S, Madani H, Chiapponi C, Grazioli S, Relmy A, Bakkali Kassimi L, Brocchi E. Characterization of the O/ME-SA/Ind-2001d foot-and-mouth disease virus epidemic recorded in the Maghreb during 2014-2015. Transbound Emerg Dis 2022; 69:e2641-e2652. [PMID: 35686649 PMCID: PMC9796625 DOI: 10.1111/tbed.14611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 01/01/2023]
Abstract
The O/ME-SA/Ind-2001d has been the main foot-and-mouth disease virus (FMDV) lineage responsible for FMD epidemics outside the Indian subcontinent from 2013 to 2017. In 2014, outbreaks caused by this FMDV lineage were reported in Maghreb, where it was initially detected in Algeria and Tunisia and later in Morocco. This was the first incursion of an FMDV type O of exotic origin in the Maghreb region after 14 years of absence. In this study, we report analyses of both VP1 and whole-genome sequences (WGSs) generated from 22 isolates collected in Algeria and Tunisia between 2014 and 2015. All the WGSs analysed showed a minimum pairwise identity of 98.9% at the nucleotide level and 99% at the amino acid level (FMDV coding region). All Tunisian sequences shared a single putative common ancestor closely related to FMDV strains circulating in Libya during 2013. Whereas sequences from Algeria suggest the country experienced two virus introductions. The first introduction is represented by strains circulating in 2014 which are closely related to those from Tunisia, the second one, of which the origin is more uncertain, includes strains collected in Algeria in 2015 that gave origin to the 2015 outbreak reported in Morocco. Overall, our results demonstrated that a unique introduction of O/Ind-2001d FMDV occurred in Maghreb through Tunisia presumably in 2014, and from then the virus spread into Algeria and later into Morocco.
Collapse
Affiliation(s)
- G. Pezzoni
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER)BresciaItaly
| | - M. Calzolari
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER)BresciaItaly
| | - E. A. Foglia
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER)BresciaItaly
| | - A. Bregoli
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER)BresciaItaly
| | - A. Di Nardo
- The Pirbright Institute, PirbrightWokingSurreyUK
| | - S. Sghaier
- Institut de la Recherche Vétérinaire de TunisieRue Djebel Lakhdhar – TunisTunisia
| | - H. Madani
- Institut National de la Médecine Vétérinaire, El HarrachAlgerAlgeria
| | - C. Chiapponi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER)BresciaItaly
| | - S. Grazioli
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER)BresciaItaly
| | - A. Relmy
- Agence nationale de sécurité sanitaire (ANSES)Laboratoire de Santé Animale, UMR1161 (INRA, ANSES, ENVA)Maisons‐AlfortFrance
| | - L. Bakkali Kassimi
- Agence nationale de sécurité sanitaire (ANSES)Laboratoire de Santé Animale, UMR1161 (INRA, ANSES, ENVA)Maisons‐AlfortFrance
| | - E. Brocchi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna (IZSLER)BresciaItaly
| |
Collapse
|
2
|
Tesfaye Y, Khan F, Gelaye E. Vaccine matching and antigenic variability of foot-and-mouth disease virus serotypes O and A from 2018 Ethiopian isolates. Int Microbiol 2021; 25:47-59. [PMID: 34224048 DOI: 10.1007/s10123-021-00178-w] [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] [Received: 01/01/2021] [Revised: 04/16/2021] [Accepted: 04/21/2021] [Indexed: 10/20/2022]
Abstract
Foot-and-mouth disease (FMD) is highly infectious, limits live animal trade, and affects ranchers owing to the loss of animal yield. The present study was designed to perform vaccine matching for field FMD virus isolates from clinically diseased cattle and assess the antigenic properties of the field isolates against the current vaccine strains used for vaccine production at the National Veterinary Institute, Ethiopia. Both sequencing and reverse transcription-polymerase chain reactions were used for distinguishing between the viral strains. To evaluate the serological relationship of the vaccine strain with these field isolates (r1 value), in vitro cross-neutralization was performed using ETH/6/2000 and ETH/38/2005 antisera. Infectious field FMD viral samples represented serotypes A and O. Sequence analysis showed that serotype A VP1/1D possessed amino acid variability at positions 28 and 42 to 48, 138, 141, 142, 148, 156, 173, and 197 compared with the ETH/6/2000 vaccine strain, whereas serotype O possessed amino acid variability at positions 45, 48, 138, 139, 140, 141, and 197 compared with the ETH/38/2005 vaccine strain. Based on the one-dimensional virus neutralization test, serotypes A and O demonstrated antigenic matching of up to 13/17 (76.47%) with the vaccine strain, except for the isolates ETH/40/2018, ETH/48/2018, ETH/55/2018, and ETH/61/2018, which had r-values less than 0.3. Therefore, the currently used vaccine strains ETH/38/2005 for serotype O and ETH/6/2000 for serotype A protected against all and most field viruses characterized as serotypes O and A, respectively, and amino acid residue variation was observed in different FMD virus B-C loops, G-H loops, and C-termini of VP1 at sites 1 and 3 in both serotypes.
Collapse
Affiliation(s)
- Yeneneh Tesfaye
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, 201306, UP, India.,National Veterinary Institute, POBox: 19, Bishoftu, Ethiopia
| | - Fazlurrahman Khan
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, 201306, UP, India. .,Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan, 48513, South Korea.
| | - Esayas Gelaye
- National Veterinary Institute, POBox: 19, Bishoftu, Ethiopia.
| |
Collapse
|
3
|
Campbell Z, Coleman P, Guest A, Kushwaha P, Ramuthivheli T, Osebe T, Perry B, Salt J. Prioritizing smallholder animal health needs in East Africa, West Africa, and South Asia using three approaches: Literature review, expert workshops, and practitioner surveys. Prev Vet Med 2021; 189:105279. [PMID: 33581421 PMCID: PMC8024747 DOI: 10.1016/j.prevetmed.2021.105279] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 12/18/2020] [Accepted: 01/18/2021] [Indexed: 12/15/2022]
Abstract
Managing the health needs of livestock contributes to reducing poverty and improving the livelihoods of smallholder and pastoralist livestock keepers globally. Animal health practitioners, producers, policymakers, and researchers all must prioritize how to mobilize limited resources. This study employed three approaches to prioritize animal health needs in East and West Africa and South Asia to identify diseases and syndromes that impact livestock keepers. The approaches were a) systematic literature review, b) a series of expert workshops, and c) a practitioner survey of veterinarians and para-veterinary professionals. The top constraints that emerged from all three approaches include endo/ ectoparasites, foot and mouth disease, brucellosis, peste des petits ruminants, Newcastle disease, and avian influenza. Expert workshops additionally identified contagious caprine pleuropneumonia, contagious bovine pleuropneumonia, mastitis, and reproductive disorders as constraints not emphasized in the literature review. Practitioner survey results additionally identified nutrition as a constraint for smallholder dairy and pastoralist small ruminant production. Experts attending the workshops agreed most constraints can be managed using existing veterinary technologies and best husbandry practices, which supports a shift away from focusing on individual diseases and new technologies towards addressing systemic challenges that limit access to veterinary services and inputs. Few research studies focused on incidence/ prevalence of disease and impact, suggesting better incorporation of socio-economic impact measures in future research would better represent the interests of livestock keepers.
Collapse
Affiliation(s)
- Zoë Campbell
- International Livestock Research Institute (ILRI), P.O. Box 30709, Nairobi, 00100, Kenya.
| | - Paul Coleman
- H20 Venture Partners, 33-35 George Street, Oxford, OX1 2AY, United Kingdom
| | - Andrea Guest
- H20 Venture Partners, 33-35 George Street, Oxford, OX1 2AY, United Kingdom
| | - Peetambar Kushwaha
- GALVmed Asia Office, Unit 118 & 120 B, Splendor Forum, Plot No 3, Jasola District Centre, Jasola, New Delhi, 110025, India
| | - Thembinkosi Ramuthivheli
- GALVmed Africa Office, International Livestock Research Institute (ILRI), Swing One, Naivasha Road, Nairobi, Kenya
| | - Tom Osebe
- GALVmed Africa Office, International Livestock Research Institute (ILRI), Swing One, Naivasha Road, Nairobi, Kenya
| | - Brian Perry
- Nuffield College of Clinical Medicine, University of Oxford, United Kingdom; College of Medicine and Veterinary Medicine, University of Edinburgh, Arthurstone House, Meigle, Blairgowrie, PH12 8QW, Scotland, United Kingdom
| | - Jeremy Salt
- GALVmed UK Office, Doherty Building, Pentlands Science Park, Bush Loan, Penicuik Edinburgh, EH26 0PZ, Scotland, United Kingdom
| |
Collapse
|
4
|
Ularamu HG, Lefebvre DJ, Haegeman A, Wungak YS, Ehizibolo DO, Lazarus DD, De Vleeschauwer AR, De Clercq K. Complex Circulation of Foot-and-Mouth Disease Virus in Cattle in Nigeria. Front Vet Sci 2020; 7:466. [PMID: 32974391 PMCID: PMC7468398 DOI: 10.3389/fvets.2020.00466] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 06/24/2020] [Indexed: 11/29/2022] Open
Abstract
Nigeria is a large densely populated country in West Africa. Most of its livestock is raised in a pastoralist production system with typical long distance migration in search of water and feed. As the demand for animal products largely exceeds the domestic production, large numbers of livestock are imported from neighboring countries without sanitary restrictions. In Nigeria, foot-and-mouth disease virus (FMDV) serotypes O, A, and Southern African Territories (SAT)2 are endemic for a long time. Clinical outbreaks of FMD due to serotype SAT1 are described again since 2015, after an absence of more than 30 years. Historically, outbreaks of FMD due to serotypes O, A, SAT1, and SAT2 were each time associated with trade of cattle entering Nigeria from neighboring countries. In the present study, tissue samples from 27 outbreaks of FMD were collected in Nigerian cattle from 2012 until 2017 in six different States and in the Federal Capital Territory. FMDV was isolated and serotyped and further characterized by VP1 sequencing and phylogenetic analysis to gain more knowledge on FMDV circulation in Nigeria. Half of the outbreaks were characterized as FMDV topotype O/EA-3, while outbreaks with other serotypes and topotypes were—in descending order—less prevalent: A/Africa/G-IV, SAT1/X, SAT2/VII, and O/WA. The high dynamics and omnipresence of FMD in Nigeria were illustrated in Plateau State where FMDV serotypes O, SAT1, and SAT2 were isolated during the course of the study, while at some point in the study, outbreaks due to FMDV serotype A were observed in three remote States. The genetic and phylogenetic analysis suggests a mixed origin of FMD outbreaks. Some outbreaks seem to be caused by sustained local transmission of FMDV strains present in Nigeria since a number of years, while other outbreaks seem to be related to recent incursions with new FMDV strains. The role of African buffaloes in the etiology of FMD in Nigeria is unclear, and sampling of wildlife is needed. The results of the present study suggest that systematic sample collection is essential to understand the complex concomitance of FMDV strains in Nigeria and essential to support the implementation of a vaccination-based control plan.
Collapse
Affiliation(s)
- Hussaini G Ularamu
- FMD Laboratory, Viral Research Division, National Veterinary Research Institute (NVRI), Vom, Nigeria
| | - David J Lefebvre
- Sciensano, Scientific Direction of Infectious Diseases in Animals, Service for Exotic Viruses and Particular Diseases, Brussels, Belgium
| | - Andy Haegeman
- Sciensano, Scientific Direction of Infectious Diseases in Animals, Service for Exotic Viruses and Particular Diseases, Brussels, Belgium
| | - Yiltawe S Wungak
- FMD Laboratory, Viral Research Division, National Veterinary Research Institute (NVRI), Vom, Nigeria
| | - David O Ehizibolo
- FMD Laboratory, Viral Research Division, National Veterinary Research Institute (NVRI), Vom, Nigeria
| | - David D Lazarus
- FMD Laboratory, Viral Research Division, National Veterinary Research Institute (NVRI), Vom, Nigeria
| | - Annebel R De Vleeschauwer
- Sciensano, Scientific Direction of Infectious Diseases in Animals, Service for Exotic Viruses and Particular Diseases, Brussels, Belgium
| | - Kris De Clercq
- Sciensano, Scientific Direction of Infectious Diseases in Animals, Service for Exotic Viruses and Particular Diseases, Brussels, Belgium
| |
Collapse
|
5
|
Tesfaye Y, Khan F, Yami M, Wadsworth J, Knowles NJ, King DP, Gelaye E. A vaccine-matching assessment of different genetic variants of serotype O foot-and-mouth disease virus isolated in Ethiopia between 2011 and 2014. Arch Virol 2020; 165:1749-1757. [PMID: 32435857 DOI: 10.1007/s00705-020-04662-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 04/13/2020] [Indexed: 10/24/2022]
Abstract
The aim of this study was to assess the vaccine-matching and antigenic properties of foot-and-mouth disease virus (FMDV) isolates collected from Ethiopia between 2011 and 2014. Samples (n = 51) were collected from cattle and pigs with clinical signs consistent with foot-and-mouth disease (FMD) on farms in Debre-Berhan, Debre-Zeit/Bishoftu, Sidamo, Mekelle, and Addis Ababa. Infectious FMDV was isolated using BHK-21 cell cultures from 38 of the 51 field samples (74.5%). All of these FMDV-positive samples were characterized as serotype O, belonging to two East Africa topotypes (EA-3 and EA-4), and their VP1-encoding sequences demonstrated amino acid sequence variability encompassing 27 positions in comparison to the vaccine strain (O/ETH/38/2005) currently provided by the National Veterinary Institute of Ethiopia. One-dimensional virus neutralization test (1 dm VNT) results showed that O/ETH/38/2005 was antigenically matched to 10 of the 16 serotype O viruses. These findings indicate that the O/ETH/38/2005 vaccine strain can provide protection against outbreaks caused by the O/EA-3 topotype, although poorer vaccine-matching results for the O/EA-4 topotype reinforce the importance of using a good-quality vaccine with high coverage in the susceptible herds with supporting post-vaccination serosurveillance to ensure that sufficient antibody titers are generated in the vaccinated animals.
Collapse
Affiliation(s)
- Yeneneh Tesfaye
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, UP, 201306, India
- National Veterinary Institute, P.O.BOX: 19, Bishoftu, Ethiopia
| | - Fazlurrahman Khan
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, UP, 201306, India
- Institute of Food Science, Pukyong National University, Busan, 48513, South Korea
| | - Martha Yami
- National Veterinary Institute, P.O.BOX: 19, Bishoftu, Ethiopia
| | - Jemma Wadsworth
- The Pirbright Institute, Ash Road, Pirbright, Woking, Surrey, GU24 0NF, UK
| | - Nick J Knowles
- The Pirbright Institute, Ash Road, Pirbright, Woking, Surrey, GU24 0NF, UK
| | - Donald P King
- The Pirbright Institute, Ash Road, Pirbright, Woking, Surrey, GU24 0NF, UK
| | - Esayas Gelaye
- National Veterinary Institute, P.O.BOX: 19, Bishoftu, Ethiopia.
| |
Collapse
|
6
|
Ehizibolo DO, Fish IH, Brito B, Bertram MR, Ardo A, Ularamu HG, Lazarus DD, Wungak YS, Nwosuh CI, Smoliga GR, Hartwig EJ, Pauszek SJ, Dickmu S, Abdoulkadiri S, Arzt J. Characterization of transboundary foot-and-mouth disease viruses in Nigeria and Cameroon during 2016. Transbound Emerg Dis 2020; 67:1257-1270. [PMID: 31880066 DOI: 10.1111/tbed.13461] [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: 02/07/2019] [Revised: 10/26/2019] [Accepted: 12/16/2019] [Indexed: 11/29/2022]
Abstract
Continuous surveillance for foot-and-mouth disease (FMD) in endemic settings such as West Africa is imperative to support improved local and regional control plans, with the long-term goal of regional eradication. This paper describes the genetic characterization of FMD viruses (FMDV) obtained from outbreaks in Nigeria (n = 45) and Cameroon (n = 15) during 2016 and from archival samples (n = 3) retrieved from a 2014 outbreak in Nigeria. These viruses were analysed in the context of previously published FMDV sequences from the region. Four FMDV serotypes: O, A, SAT1 and SAT2, were detected. Phylogenetic analyses of the VP1 coding sequences indicate the continuity of FMDV serotype O East Africa-3 (O/EA-3), serotype A AFRICA genotype G-IV (A/AFRICA/G-IV) and serotype South African Territories (SAT) 2 lineage VII (SAT2/VII). The FMDV SAT1 topotype X (SAT1/X), which emerged in Nigeria in 2015, continued to be associated with outbreaks in the region during 2016, and SAT1 is reported for the first time from Cameroon. Additionally, a re-emergence or re-introduction of the serotype O West Africa (O/WA) topotype in Nigeria is described herein. Our findings indicate a consistent, pan-serotypic relationship between FMDV strains detected in Cameroon and Nigeria. Additionally, FMDV strains from West Africa obtained in this study were genetically related to those occurring in East and North Africa. These phylogenetic relationships suggest that animal movements (pastoralism and/or trade) are important factors for virus spread across the African continent. These data provide critical baselines which are a necessary component of Stages 0 and 1 of the Progressive Control Pathway of FMD (PCP-FMD). Specifically, characterizing the existing virus strains (risk) provides the basis for the comprehensive risk-based control plan which is the requisite criteria for Nigeria's transition to Stage 2 of PCP-FMD, and for coordinated regional control of FMD.
Collapse
Affiliation(s)
| | - Ian H Fish
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Greenport, NY, USA.,Oak Ridge Institute for Science and Education, PIADC Research Participation Program, Oak Ridge, TN, USA
| | - Barbara Brito
- The ithree Institute, University of Technology Sydney, Ultimo, Australia
| | - Miranda R Bertram
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Greenport, NY, USA.,Oak Ridge Institute for Science and Education, PIADC Research Participation Program, Oak Ridge, TN, USA
| | - Abdullahi Ardo
- Virology Division, National Veterinary Research Institute, Vom, Nigeria
| | | | - David D Lazarus
- Virology Division, National Veterinary Research Institute, Vom, Nigeria
| | - Yiltawe S Wungak
- Virology Division, National Veterinary Research Institute, Vom, Nigeria
| | - Chika I Nwosuh
- Virology Division, National Veterinary Research Institute, Vom, Nigeria
| | - George R Smoliga
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Greenport, NY, USA
| | - Ethan J Hartwig
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Greenport, NY, USA
| | - Steven James Pauszek
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Greenport, NY, USA
| | - Simon Dickmu
- Laboratoire National Vétérinaire (LANAVET), Garoua, Cameroon
| | | | - Jonathan Arzt
- Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Agricultural Research Service, United States Department of Agriculture, Greenport, NY, USA
| |
Collapse
|
7
|
Teye MV, Sebunya TK, Fana EM, King DP, Seoke L, Knowles NJ, Awuni JA, Matlho G, Leteane M, Hyera JMK. Foot-and-mouth disease in Southern Ghana: occurrence and molecular characterization of circulating viruses. Trop Anim Health Prod 2019; 51:1667-1677. [PMID: 30879248 DOI: 10.1007/s11250-019-01864-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 03/08/2019] [Indexed: 10/27/2022]
Abstract
Foot-and-mouth disease (FMD) is considered to be endemic in Ghana. However, our knowledge of the local epidemiology of the disease is restricted by a lack of serological information and data for characterized viruses causing field outbreaks. In order to improve our understanding of the prevailing situation, this study was initiated to establish the FMD viruses (FMDV) circulating in the country. During 2016, sera (n = 93) and epithelia/oral swab (n = 20) samples were collected from cattle from four districts in Southern Ghana that experienced FMD outbreaks. Sera were analyzed using the PrioCHECK® FMDV non-structural protein (NSP) ELISA whereas the epithelia/oral swab samples were examined by virus isolation, antigen ELISA, reverse transcription polymerase chain reaction (RT-PCR), and sequencing of VP1 followed by phylogenetic analysis. Assay for antibodies against FMDV NSPs provided evidence of exposure to FMDV in 88.2% (82/93) of the sera tested. Serotypes O and A viruses were detected from clinical samples by RT-PCR and sequencing of VP1. Phylogenetic analysis of VP1 coding sequences revealed that the serotype O viruses belonged to the West Africa (WA) topotype and were most closely related to viruses from Niger and Benin, while the serotype A viruses clustered within genotype IV (G-IV) of the Africa topotype and were most closely related to viruses from Nigeria. This study provides useful information on FMDV serotypes and viral lineages that circulate in Ghana and West Africa that may aid in the formulation of effective FMD control strategies.
Collapse
Affiliation(s)
- Mathias V Teye
- Department of Biological Sciences, Faculty of Science, University of Botswana, Private Bag 00704, Gaborone, Botswana
| | - Teresa K Sebunya
- Department of Biological Sciences, Faculty of Science, University of Botswana, Private Bag 00704, Gaborone, Botswana
| | - Elliot M Fana
- OIE Sub-Saharan Africa Regional Reference Laboratory for Foot-and-Mouth Disease, Botswana Vaccine Institute, Private Bag 0031, Gaborone, Botswana
| | - Donald P King
- The Pirbright Institute, Ash Road, Pirbright, Woking, Surrey, GU24 0NF, UK
| | - LaToya Seoke
- OIE Sub-Saharan Africa Regional Reference Laboratory for Foot-and-Mouth Disease, Botswana Vaccine Institute, Private Bag 0031, Gaborone, Botswana
| | - Nick J Knowles
- The Pirbright Institute, Ash Road, Pirbright, Woking, Surrey, GU24 0NF, UK
| | - Joseph A Awuni
- Accra Veterinary Laboratory, Veterinary Services Directorate, Ministry of Food and Agriculture, P. O. Box M 161, Accra, Ghana
| | - George Matlho
- OIE Sub-Saharan Africa Regional Reference Laboratory for Foot-and-Mouth Disease, Botswana Vaccine Institute, Private Bag 0031, Gaborone, Botswana
| | - Melvin Leteane
- Department of Biological Sciences, Faculty of Science, University of Botswana, Private Bag 00704, Gaborone, Botswana
| | - Joseph M K Hyera
- OIE Sub-Saharan Africa Regional Reference Laboratory for Foot-and-Mouth Disease, Botswana Vaccine Institute, Private Bag 0031, Gaborone, Botswana.
| |
Collapse
|
8
|
Souley Kouato B, Elliot FM, King DP, Hyera J, Knowles NJ, Ludi AB, Mioulet V, Matlho G, De Clercq K, Thys E, Marichatou H, Issa S, Saegerman C. Outbreak investigations and molecular characterization of foot-and-mouth disease viruses circulating in south-west Niger. Transbound Emerg Dis 2018; 65:146-157. [PMID: 28345819 DOI: 10.1111/tbed.12642] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Indexed: 11/28/2022]
Abstract
In Niger, the epidemiological situation regarding foot-and-mouth disease is unclear as many outbreaks are unreported. This study aimed (i) to identify Foot-and-mouth disease virus (FMDV) strains currently circulating in cattle herds, and (ii) to identify risk factors associated with Foot-and-mouth disease (FMD)-seropositive animals in clinical outbreaks. Epithelial tissues (n = 25) and sera (n = 227) were collected from cattle in eight districts of the south-western part of Niger. Testing of clinical material revealed the presence of FMDV serotype O that was characterized within the O/WEST AFRICA topotype. The antigenic relationship between one of the FMDV isolates from Niger (O/NGR/4/2015) and three reference vaccine strains was determined by the two-dimensional virus neutralization test (2dmVNT), revealing a close antigenic match between the field isolate from Niger and three FMDV serotype O vaccine strains. Serological analyses using a non-structural protein (NSP) test provided evidence for previous FMDV infection in 70% (158/227) of the sera tested. Multivariate logistic regression analysis revealed that only the herd composition (presence of both cattle and small ruminants) was significantly associated with FMDV seropositivity as defined by NSP-positive results (p-value = .006). Of these positive sera, subsequent testing by liquid-phase blocking ELISA (LPBE) showed that 86% (136/158) were positive for one (or more) of four FMDV serotypes (A, O, Southern African Territories (SAT) 1 and SAT 2). This study provides epidemiological information about FMD in the south-western part of Niger and highlights the complex transboundary nature of FMD in Africa. These findings may help to develop effective control and preventive strategies for FMD in Niger as well, as other countries in West Africa.
Collapse
Affiliation(s)
- B Souley Kouato
- Faculty of Veterinary Medicine, Research Unit in Epidemiology and Risk Analysis Applied to Veterinary Sciences (UREAR-ULg), Fundamental and Applied Research for Animals & Health (FARAH) Centre, University of Liege, Liege, Belgium.,Institut National de la Recherche Agronomique du Niger (INRAN), Niamey, Niger
| | - F M Elliot
- Botswana Vaccine Institute, Gaborone, Botswana
| | - D P King
- The Pirbright Institute, Woking, Surrey, UK
| | - J Hyera
- Botswana Vaccine Institute, Gaborone, Botswana
| | | | - A B Ludi
- The Pirbright Institute, Woking, Surrey, UK
| | - V Mioulet
- The Pirbright Institute, Woking, Surrey, UK
| | - G Matlho
- Botswana Vaccine Institute, Gaborone, Botswana
| | - K De Clercq
- Veterinary and Agrochemical Research Centre (CODA-CERVA), Brussels, Belgium
| | - E Thys
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - H Marichatou
- Faculté d'Agronomie, Université Abdou Moumouni de Niamey, Niamey, Niger
| | - S Issa
- Institut National de la Recherche Agronomique du Niger (INRAN), Niamey, Niger
| | - C Saegerman
- Faculty of Veterinary Medicine, Research Unit in Epidemiology and Risk Analysis Applied to Veterinary Sciences (UREAR-ULg), Fundamental and Applied Research for Animals & Health (FARAH) Centre, University of Liege, Liege, Belgium
| |
Collapse
|
9
|
Robinson L, Knight-Jones TJD, Charleston B, Rodriguez LL, Gay CG, Sumption KJ, Vosloo W. Global Foot-and-Mouth Disease Research Update and Gap Analysis: 7 - Pathogenesis and Molecular Biology. Transbound Emerg Dis 2017; 63 Suppl 1:63-71. [PMID: 27320168 DOI: 10.1111/tbed.12520] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Indexed: 11/28/2022]
Abstract
We assessed research knowledge gaps in the fields of FMDV (foot-and-mouth disease virus) pathogenesis and molecular biology by performing a literature review (2011-15) and collecting research updates (2014) from 33 institutes from across the world. Findings were used to identify priority areas for future research. There have been important advances in FMDV pathogenesis; FMDV remains in lymph nodes of many recovered animals that otherwise do not appear persistently infected, even in species previously not associated with the carrier state. Whether virus retention helps maintain host immunity and/or virus survival is not known. Studies of FMDV pathogenesis in wildlife have provided insights into disease epidemiology, in endemic and epidemic settings. Many aspects of FMDV infection and virus entry remain unknown; however, at the cellular level, we know that expression level and availability of integrins (that permit viral entry), rate of clearance of infected cells and strength of anti-viral type I IFN (interferon) response are key determinants of tissue tropism. Extending findings to improved understanding of transmission requires a standardized approach and adoption of natural routes of infection during experimental study. There has been recognition of the importance of autophagosomes for FMDV entry into the cytoplasm following cell surface receptor binding, and that distinct internal cellular membranes are exploited for viral replication and immune evasion. New roles for viral proteins in blocking type I IFN production and downstream signalling have been identified facilitating research in anti-viral therapeutics. We know more about how infection affects cell protein expression, and research into molecular determinants of capsid stability has aided the development of stable vaccines. We have an expanding knowledge of viral and host molecular determinates of virulence and infectiousness, and of how phylogenetics may be used to estimate vaccine match and strain distribution. With ongoing advances, these areas could translate into significantly improved disease control.
Collapse
Affiliation(s)
| | | | | | - L L Rodriguez
- Plum Island Animal Disease Center, ARS, USDA, Greenport, NY, USA
| | - C G Gay
- Agricultural Research Service, USDA, National Program 103-Animal Health, Beltsville, MD, USA
| | - K J Sumption
- European Commission for the Control of FMD (EuFMD), FAO, Rome, Italy
| | - W Vosloo
- Australian Animal Health Laboratory, CSIRO-Biosecurity Flagship, Geelong, Vic., Australia
| |
Collapse
|
10
|
Ullah A, Jamal SM, Romey A, Gorna K, Kakar MA, Abbas F, Ahmad J, Zientara S, Bakkali Kassimi L. Genetic Characterization of Serotypes A and Asia-1 Foot-and-mouth Disease Viruses in Balochistan, Pakistan, in 2011. Transbound Emerg Dis 2016; 64:1569-1578. [DOI: 10.1111/tbed.12548] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Indexed: 11/29/2022]
Affiliation(s)
- A. Ullah
- Center for Advanced Studies in Vaccinology and Biotechnology (CASVAB); University of Balochistan; Quetta Pakistan
- Department of Biotechnology and Informatics; Faculty of Life Sciences and Informatics; Balochistan University of Information Technology, Engineering and Management Sciences; Beleli Quetta
| | - S. M. Jamal
- Department of Biotechnology; University of Malakand; Chakdara Khyber Pakhtunkhwa Pakistan
| | - A. Romey
- ANSES; Laboratory for Animal Health; UMR 1161 Virology (ANSES, INRA, ENVA); University of Paris EST; Maisons-Alfort France
| | - K. Gorna
- ANSES; Laboratory for Animal Health; UMR 1161 Virology (ANSES, INRA, ENVA); University of Paris EST; Maisons-Alfort France
| | - M. A. Kakar
- Livestock and Dairy Development Department; Quetta Balochistan
| | - F. Abbas
- Center for Advanced Studies in Vaccinology and Biotechnology (CASVAB); University of Balochistan; Quetta Pakistan
| | - J. Ahmad
- Department of Biotechnology and Informatics; Faculty of Life Sciences and Informatics; Balochistan University of Information Technology, Engineering and Management Sciences; Beleli Quetta
| | - S. Zientara
- ANSES; Laboratory for Animal Health; UMR 1161 Virology (ANSES, INRA, ENVA); University of Paris EST; Maisons-Alfort France
| | - L. Bakkali Kassimi
- ANSES; Laboratory for Animal Health; UMR 1161 Virology (ANSES, INRA, ENVA); University of Paris EST; Maisons-Alfort France
| |
Collapse
|
11
|
Gorna K, Relmy A, Romey A, Zientara S, Blaise-Boisseau S, Bakkali-Kassimi L. Establishment and validation of two duplex one-step real-time RT-PCR assays for diagnosis of foot-and-mouth disease. J Virol Methods 2016; 235:168-175. [PMID: 27317973 DOI: 10.1016/j.jviromet.2016.03.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 03/11/2016] [Accepted: 03/21/2016] [Indexed: 11/19/2022]
Abstract
Two duplex one-step TaqMan-based RT-PCR protocols for detection of foot-and-mouth disease virus (FMDV) were established and validated. Each RT-PCR test consists of a ready-to-use master mix for simultaneous detection of the well established 3D or IRES FMDV targets and incorporates the host β-actin mRNA as an internal control target, in a single-tube assay. The two real-time RT-PCR 3D/β-actin and IRES/β-actin tests are highly sensitive and able to detect up to 7TCID50/ml of FMDV and 10 copies/1μl of viral RNA. In field epithelium samples, the diagnostic sensitivity was 100% (95% CI; 91-100%) for the 3D/β-actin test and 97% (95% CI; 87-100%) for the IRES/β-actin test. The diagnostic specificity was 100% (95% CI; 95-100%) for both RT-PCRs. In addition, the two protocols proved to be robust, showing inter-assay coefficients of variation ranging from 1.94% to 6.73% for the IRES target and from 2.33% to 5.42% for the 3D target for different RNA extractions and different RT-PCR conditions. The internally controlled one-step real-time RT-PCR protocols described in this study provide a rapid, effective and reliable method for the detection of FMDV and thus may improve the routine diagnosis for foot-and-mouth disease.
Collapse
Affiliation(s)
- K Gorna
- Université Paris EST, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161 (ANSES INRA ENVA), Laboratoire National et OIE de référence pour la fièvre aphteuse, 14 rue Pierre et Marie Curie, 94706 Maisons-Alfort, France
| | - A Relmy
- Université Paris EST, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161 (ANSES INRA ENVA), Laboratoire National et OIE de référence pour la fièvre aphteuse, 14 rue Pierre et Marie Curie, 94706 Maisons-Alfort, France
| | - A Romey
- Université Paris EST, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161 (ANSES INRA ENVA), Laboratoire National et OIE de référence pour la fièvre aphteuse, 14 rue Pierre et Marie Curie, 94706 Maisons-Alfort, France
| | - S Zientara
- Université Paris EST, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161 (ANSES INRA ENVA), Laboratoire National et OIE de référence pour la fièvre aphteuse, 14 rue Pierre et Marie Curie, 94706 Maisons-Alfort, France
| | - S Blaise-Boisseau
- Université Paris EST, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161 (ANSES INRA ENVA), Laboratoire National et OIE de référence pour la fièvre aphteuse, 14 rue Pierre et Marie Curie, 94706 Maisons-Alfort, France
| | - L Bakkali-Kassimi
- Université Paris EST, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161 (ANSES INRA ENVA), Laboratoire National et OIE de référence pour la fièvre aphteuse, 14 rue Pierre et Marie Curie, 94706 Maisons-Alfort, France.
| |
Collapse
|
12
|
Maganga GD, Relmy A, Bakkali-Kassimi L, Ngoubangoye B, Tsoumbou T, Bouchier C, N'Dilimabaka N, Leroy EM, Zientara S, Berthet N. Molecular characterization of Orf virus in goats in Gabon, Central Africa. Virol J 2016; 13:79. [PMID: 27178401 PMCID: PMC4866431 DOI: 10.1186/s12985-016-0535-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 05/05/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Orf or contagious ecthyma is a zoonotic viral infection with a potential serious health threat for the small ruminants industry as well as humans. It is currently emerging in new territories. RESULTS Eight suspected clinical cases of pustular dermatitis in goats occurred in the rural area of Tebe, in south-eastern Gabon, in January 2013. The orf virus (ORFV) was detected by high-throughput sequencing on sera, buccal swabs and scab pool samples. It was confirmed in six out of eight sick goats by using specific PCR targeting the major envelope protein (B2L) and the orf virus interferon resistance (VIR) genes. Phylogenetic analysis revealed that the Gabonese strain and South Korean strains evolved from a common ancestor, suggesting an Asian origin of the ORFV' Gabonese strain. CONCLUSIONS This study provides the molecular detection of the ORFV strain involved in the cases of pustular dermatitis in goats and highlights its circulation in Gabon.
Collapse
Affiliation(s)
- Gael D Maganga
- Centre International de Recherches Médicales de Franceville (CIRMF), BP769, Franceville, Gabon. .,Institut National Supérieur d'Agronomie et de Biotechnologies (INSAB), Franceville, Gabon.
| | - Anthony Relmy
- French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Maisons-Alfort, France
| | - Labib Bakkali-Kassimi
- French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Maisons-Alfort, France
| | - Barthélémy Ngoubangoye
- Centre International de Recherches Médicales de Franceville (CIRMF), BP769, Franceville, Gabon
| | - Thierry Tsoumbou
- Centre International de Recherches Médicales de Franceville (CIRMF), BP769, Franceville, Gabon
| | - Christiane Bouchier
- Institut Pasteur, Plate-forme Génomique - Pôle Biomics, 28 rue du Dr. Roux, 75724, Paris, France
| | - Nadine N'Dilimabaka
- Centre International de Recherches Médicales de Franceville (CIRMF), BP769, Franceville, Gabon
| | - Eric M Leroy
- Centre International de Recherches Médicales de Franceville (CIRMF), BP769, Franceville, Gabon.,Institut de Recherche pour le Développement (IRD), Maladies Infectieuses et vecteurs: Ecologie, génétique, Evolution et Contrôle (IRD 224 - CNRS 5290 6 UM1- UM2), Montpellier, France
| | - Stéphan Zientara
- French Agency for Food, Environmental and Occupational Health and Safety (ANSES), Maisons-Alfort, France
| | - Nicolas Berthet
- Centre International de Recherches Médicales de Franceville (CIRMF), BP769, Franceville, Gabon.,Centre National de la Recherche Scientifique (CNRS), UMR3569, 25 rue du docteur Roux, 75724, Paris, France
| |
Collapse
|
13
|
Kopliku L, Relmy A, Romey A, Gorna K, Zientara S, Bakkali-Kassimi L, Blaise-Boisseau S. Establishment of persistent foot-and-mouth disease virus (FMDV) infection in MDBK cells. Arch Virol 2015. [PMID: 26215440 DOI: 10.1007/s00705-015-2526-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
In addition to acute infection and disease, foot-and-mouth disease virus (FMDV) can cause persistent infection in ruminants. Such "carrier" animals represent a potential risk for FMDV transmission to susceptible animals. However, the mechanisms and the factors that determine FMDV persistence remain unknown. We describe here the establishment of FMDV type O persistent infection in a bovine epithelial cell line (Madin-Darby bovine kidney; MDBK). Preliminary experiments to assess the permissivity of MDBK cells to FMDV O infection revealed an unusual pattern of infection: after the initial phase of acute cell lysis, new monolayers formed within 48-72 h post-infection. We found that some cells survived cytolytic infection and subsequently regrew, thereby demonstrating that this bovine cell line can be persistently infected with FMDV type O. Further evidence that MDBK cells were persistently infected with FMDV includes: (i) detection of viral RNA in cells as well as in cell culture supernatants, (ii) detection of viral antigens in the cells by immunofluorescence analysis, and (iii) production of infectious viral particles for up to 36 cell passages. Furthermore, preliminary sequence analysis of persistent virus revealed a single nucleotide substitution within the VP1 coding region, resulting in the V50A amino acid substitution. This bovine model of FMDV persistence holds promise for the investigation of the viral and cellular molecular determinants that promote FMDV persistence.
Collapse
Affiliation(s)
- Lela Kopliku
- Université Paris-Est, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161, 14 rue Pierre et Marie Curie, 94700, Maisons-Alfort, France
| | - Anthony Relmy
- Université Paris-Est, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161, 14 rue Pierre et Marie Curie, 94700, Maisons-Alfort, France
| | - Aurore Romey
- Université Paris-Est, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161, 14 rue Pierre et Marie Curie, 94700, Maisons-Alfort, France
| | - Kamila Gorna
- Université Paris-Est, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161, 14 rue Pierre et Marie Curie, 94700, Maisons-Alfort, France
| | - Stephan Zientara
- Université Paris-Est, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161, 14 rue Pierre et Marie Curie, 94700, Maisons-Alfort, France
| | - Labib Bakkali-Kassimi
- Université Paris-Est, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161, 14 rue Pierre et Marie Curie, 94700, Maisons-Alfort, France
| | - Sandra Blaise-Boisseau
- Université Paris-Est, ANSES, Laboratoire de Santé Animale, UMR Virologie 1161, 14 rue Pierre et Marie Curie, 94700, Maisons-Alfort, France.
| |
Collapse
|
14
|
Di Nardo A, Libeau G, Chardonnet B, Chardonnet P, Kock RA, Parekh K, Hamblin P, Li Y, Parida S, Sumption KJ. Serological profile of foot-and-mouth disease in wildlife populations of West and Central Africa with special reference to Syncerus caffer subspecies. Vet Res 2015; 46:77. [PMID: 26156024 PMCID: PMC4495843 DOI: 10.1186/s13567-015-0213-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 06/09/2015] [Indexed: 12/04/2022] Open
Abstract
The role which West and Central African wildlife populations might play in the transmission dynamics of FMD is not known nor have studies been performed in order to assess the distribution and prevalence of FMD in wild animal species inhabiting those specific regions of Africa. This study reports the FMD serological profile extracted from samples (n = 696) collected from wildlife of West and Central Africa between 1999 and 2003. An overall prevalence of FMDV NSP reactive sera of 31.0% (216/696) was estimated, where a significant difference in seropositivity (p = 0.000) was reported for buffalo (64.8%) as opposed to other wild animal species tested (17.8%). Different levels of exposure to the FMDV resulted for each of the buffalo subspecies sampled (p = 0.031): 68.4%, 50.0% and 0% for Nile Buffalo, West African Buffalo and African Forest Buffalo, respectively. The characterisation of the FMDV serotypes tested for buffalo found presence of antibodies against all the six FMDV serotypes tested, although high estimates for type O and SAT 3 were reported for Central Africa. Different patterns of reaction to the six FMDV serotypes tested were recorded, from sera only positive for a single serotype to multiple reactivities. The results confirmed that FMDV circulates in wild ruminants populating both West and Central Africa rangelands and in particular in buffalo, also suggesting that multiple FMDV serotypes might be involved with type O, SAT 2 and SAT 1 being dominant. Differences in serotype and spill-over risk between wildlife and livestock likely reflect regional geography, historical circulation and differing trade and livestock systems.
Collapse
Affiliation(s)
- Antonello Di Nardo
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom. .,The Pirbright Institute, Pirbright, Surrey, Woking, United Kingdom.
| | - Geneviève Libeau
- Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD), UMR Contrôle des Maladies, Campus International de Baillarguet, Montpellier, France.
| | | | - Philippe Chardonnet
- International Foundation for the Conservation of Wildlife (IGF), Paris, France.
| | - Richard A Kock
- Royal Veterinary College (RVC), Hatfield, United Kingdom.
| | - Krupali Parekh
- The Pirbright Institute, Pirbright, Surrey, Woking, United Kingdom.
| | - Pip Hamblin
- The Pirbright Institute, Pirbright, Surrey, Woking, United Kingdom.
| | - Yanmin Li
- The Pirbright Institute, Pirbright, Surrey, Woking, United Kingdom. .,Present address: Boehringer Ingelheim GmbH, Shanghai, China.
| | - Satya Parida
- The Pirbright Institute, Pirbright, Surrey, Woking, United Kingdom.
| | - Keith J Sumption
- European Commission for the Control of Foot-and-Mouth Disease (EuFMD), Food and Agriculture Organisation of the United Nations (FAO), Rome, Italy.
| |
Collapse
|
15
|
Brito BP, Rodriguez LL, Hammond JM, Pinto J, Perez AM. Review of the Global Distribution of Foot-and-Mouth Disease Virus from 2007 to 2014. Transbound Emerg Dis 2015; 64:316-332. [DOI: 10.1111/tbed.12373] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Indexed: 01/23/2023]
Affiliation(s)
- B. P. Brito
- Agricultural Research Service; U.S. Department of Agriculture; Plum Island Animal Disease Center; Greenport NY USA
| | - L. L. Rodriguez
- Agricultural Research Service; U.S. Department of Agriculture; Plum Island Animal Disease Center; Greenport NY USA
| | - J. M. Hammond
- Centre for Animal & Plant Biosecurity; NSW Department of Primary Industries; Elizabeth Macarthur Agricultural Institute; Menangle NSW Australia
| | - J. Pinto
- Animal Health Service; Food and Agriculture Organization of the United Nations (FAO); Rome Italy
| | - A. M. Perez
- Department of Veterinary Population Medicine; College of Veterinary Medicine; University of Minnesota; Saint Paul MN USA
| |
Collapse
|
16
|
Elhaig MM, Elsheery MN. Molecular investigation of foot-and-mouth disease virus in domestic bovids from Gharbia, Egypt. Trop Anim Health Prod 2014; 46:1455-62. [PMID: 25187028 DOI: 10.1007/s11250-014-0665-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 08/19/2014] [Indexed: 11/30/2022]
Abstract
An outbreak of foot-and-mouth disease (FMD) affecting cattle and water buffalo (Bubalus bubalis) occurred in Egypt during 2012/2013. The present study was undertaken to determine the current strains of the FMD virus (FMDV) and the prevalence of FMD among cattle and buffalo in Gharbia, Egypt. The diagnostic sensitivity of two RT-PCR assays for the detection of FMDV was evaluated. The results revealed that SAT2 was the causative agent. The percentage of infected of animals varied with the detection method, ranging from 62.5 % by the untranslated region (UTR) RT-PCR to 75.6 % by SAT2 RT-PCR. The overall prevalence and mortality rates were 100 and 21 %, respectively. The mortality was higher in buffalo (23.3 %) than it was in cattle (17 %). A partial sequence of SAT2 was identical (90-100 %) to Egyptian isolates and was close in similarity to sequences from Sudan and Libya. In conclusion, FMD in Egypt is caused by SAT2. No other serotypes were detected. The results of this study provided the valuable data regarding the epidemiology of SAT2 in cattle and water buffalo from Egypt, which strengthens the need to change the strategies of both control and prevention that help to prevent the spread of the disease.
Collapse
Affiliation(s)
- Mahmoud Mohey Elhaig
- Department of Animal Medicine (Infectious Diseases), Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt,
| | | |
Collapse
|