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Bandaw T, Gebremeskel HF, Muluneh A, Mengistu TS, Kebede IA. Seroprevalence and molecular detection of foot and mouth disease virus in cattle in selected districts of Wolaita Zone, Southern Ethiopia. Sci Rep 2024; 14:7929. [PMID: 38575673 PMCID: PMC10994912 DOI: 10.1038/s41598-024-57404-4] [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: 11/26/2023] [Accepted: 03/18/2024] [Indexed: 04/06/2024] Open
Abstract
Foot and mouth disease (FMD) is a highly contagious, endemic, and acute viral cattle ailment that causes major economic damage in Ethiopia. Although several serotypes of the FMD virus have been detected in Ethiopia, there is no documented information about the disease's current serostatus and serotypes circulating in the Wolaita zone. Thus, from March to December 2022, a cross-sectional study was conducted to evaluate FMDV seroprevalence, molecular detection, and serotype identification in three Wolaita Zone sites. A multistage sample procedure was used to choose three peasant associations from each study region, namely Wolaita Sodo, Offa district, and Boloso sore district. A systematic random sampling technique was employed to pick 384 cattle from the population for the seroprevalence research, and 10 epithelial tissue samples were purposefully taken from outbreak individuals for molecular detection of FMDV. The sera were examined using 3ABC FMD NSP Competition ELISA to find antibodies against FMDV non-structural proteins, whereas epithelial tissue samples were analyzed for molecular detection using real-time RT-PCR, and sandwich ELISA was used to determine the circulating serotypes. A multivariable logistic regression model was used to evaluate the associated risk variables. The total seroprevalence of FMD in cattle was 46.88% (95% CI 41.86-51.88), with Wolaita Sodo Town having the highest seroprevalence (63.28%). As a consequence, multivariable logistic regression analysis revealed that animal age, herd size, and interaction with wildlife were all substantially related to FMD seroprevalence (p < 0.05). During molecular detection, only SAT-2 serotypes were found in 10 tissue samples. Thus, investigating FMD outbreaks and identifying serotypes and risk factors for seropositivity are critical steps in developing effective control and prevention strategies based on the kind of circulating serotype. Moreover, further research for animal species other than cattle was encouraged.
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Affiliation(s)
- Tamenech Bandaw
- School of Veterinary Medicine, Wolaita Sodo University, P. O. Box 138, Wolaita Sodo, Ethiopia
| | | | | | - Tilaye Shibiru Mengistu
- School of Veterinary Medicine, Wolaita Sodo University, P. O. Box 138, Wolaita Sodo, Ethiopia
| | - Isayas Asefa Kebede
- School of Veterinary Medicine, Ambo University, P. O. Box 19, Guder, Ethiopia.
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Garner G, Vosloo W, Tapsuwan S, Bradhurst R, Seitzinger AH, Breed AC, Capon T. Comparing surveillance approaches to support regaining free status after a foot-and-mouth disease outbreak. Prev Vet Med 2021; 194:105441. [PMID: 34352519 DOI: 10.1016/j.prevetmed.2021.105441] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 06/22/2021] [Accepted: 07/15/2021] [Indexed: 11/30/2022]
Abstract
Following an FMD eradication program, surveillance will be required to demonstrate that the program has been successful. The World Organization for Animal Health (OIE) provides guidelines including waiting periods and appropriate surveillance to support regaining FMD-free status. Serological surveillance is the recommended method for demonstrating freedom but is time consuming and expensive. New technologies such as real-time reverse transcription polymerase chain reaction (RT-qPCR) tests and sampling techniques such as bulk milk testing (BMT) of dairy cattle, oral swabs, and saliva collection with rope tethers in piggeries could enable surveillance to be done more efficiently. Epidemiological modelling was used to simulate FMD outbreaks, with and without emergency vaccination as part of the response, in Australia. Baseline post-outbreak surveillance approaches for unvaccinated and vaccinated animals based on the European FMD directive were compared with alternative approaches in which the sampling regime, sampling approaches and/or the diagnostic tests used were varied. The approaches were compared in terms of the resources required, time taken, cost, and effectiveness i.e., ability of the surveillance regime to correctly identify the infection status of herds. In the non-vaccination scenarios, the alternative approach took less time to complete and cost less, with the greatest benefits seen with larger outbreaks. In vaccinated populations, the alternative surveillance approaches significantly reduced the number of herds sampled, the total number of tests done and costs of the post-outbreak surveillance. There was no reduction in effectiveness using the alternative approaches, with one of the benefits being a reduction in the number of false positive herds. Alternative approaches to FMD surveillance based on non-invasive sampling methods and RT-qPCR tests have the potential to enable post outbreak surveillance substantiating FMD freedom to be done more quickly and less expensively than traditional approaches based on serological surveys.
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Affiliation(s)
- Graeme Garner
- CSIRO-Land and Water, North Road, Acton, 2601, ACT, Australia
| | - Wilna Vosloo
- CSIRO-Australian Centre for Disease Preparedness, 5 Portarlington Road, 3220, Geelong, Australia
| | - Sorada Tapsuwan
- CSIRO-Land and Water, North Road, Acton, 2601, ACT, Australia
| | - Richard Bradhurst
- Centre of Excellence for Biosecurity Risk Analysis, School of BioSciences, University of Melbourne, Parkville, 3010, VIC, Australia
| | | | - Andrew C Breed
- Epidemiology and One Health Section, Department of Agriculture, Water and the Environment, Canberra, 2601, ACT, Australia; School of Veterinary Science, University of Queensland, Brisbane, Australia
| | - Tim Capon
- CSIRO-Land and Water, North Road, Acton, 2601, ACT, Australia
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Awel SM, Dilba GM, Abraha B, Zewde D, Wakjira BS, Aliy A. Seroprevalence and Molecular Detection of Foot and Mouth Disease Virus in Dairy Cattle Around Addis Ababa, Central Ethiopia. VETERINARY MEDICINE-RESEARCH AND REPORTS 2021; 12:187-197. [PMID: 34285888 PMCID: PMC8285296 DOI: 10.2147/vmrr.s317103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/24/2021] [Indexed: 11/23/2022]
Abstract
Background Foot and mouth disease is a debilitating and highly contagious transboundary disease of cattle that can cause a huge economical loss globally. It is a notifiable disease in Ethiopia, and it is thought to be causing a decrease in cattle productivity and production. Methods A cross-sectional study and outbreak investigation were performed to estimate seroprevalence, identify associated factors and serotypes of FMDV in dairy cattle around Addis Ababa. A multi-stage random sampling technique was employed for the selection of sampling units for the seroprevalence study. A total of 383 blood samples were collected using plain vacutainer tubes and the obtained sera were tested by 3ABC-Ab ELISA at the NAHDIC lab. Also, from outbreak cases, 20 epithelial tissue samples were collected purposively for the molecular detection of FMDV serotypes. Results The overall seroprevalence of FMD in dairy cattle was 72.1% (95% CI=67.27-76.50). The seroprevalence in dairy cattle of Ada Berga, Holeta, and Sululta districts was 97.2%, 71.4%, and 57.6%, respectively. Up on Chi-square analysis, age, body condition, and management system were significantly associated with FMD seroprevalence (p<0.05). Besides, multivariable logistic regression analysis showed that district, age, body condition, and management were significantly associated with FMD seroprevalence (p<0.05). The odds of being seropositive to FMD were 6.9 (95% CI=1.8-24.9; p=0.005) and 2.3 (95% CI=1.2-4.7; p=0.01) times higher in cattle found in Ada Berga and Holeta Woreda. From outbreak cases, 18 (90.0%) were identified positive for FMDV serotype O. Conclusion The current study revealed higher seroprevalence was recorded in the study area and associated risk factors identified statically, serotype O of FMDV was identified from outbreak cases. Therefore, it is critical to design and implement feasible control and prevention mechanisms based on the type of circulating virus serotype.
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Affiliation(s)
- Shazali Mohammed Awel
- Jigjiga University, College of Veterinary Medicine, Jigjiga, Ethiopia.,Haramaya University, College of Veterinary Medicine, Dire Dawa, Ethiopia
| | - Getachew Mulatu Dilba
- Ambo University, College of Agriculture and Veterinary Science, Department of Veterinary Laboratory Technology, Ambo, Oromia, Ethiopia
| | - Bruk Abraha
- Haramaya University, College of Veterinary Medicine, Dire Dawa, Ethiopia
| | - Demeke Zewde
- National Animal Health Diagnostic and Investigation Center, Sebeta, Ethiopia
| | | | - Abde Aliy
- National Animal Health Diagnostic and Investigation Center, Sebeta, Ethiopia
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Effective Diagnosis of Foot-And-Mouth Disease Virus (FMDV) Serotypes O and A Based on Optical and Electrochemical Dual-Modal Detection. Biomolecules 2021; 11:biom11060841. [PMID: 34198783 PMCID: PMC8229964 DOI: 10.3390/biom11060841] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/31/2021] [Accepted: 06/01/2021] [Indexed: 12/31/2022] Open
Abstract
Foot-and-mouth disease virus (FMDV) is a highly contagious disease that affects cloven-hoofed animals. The traditional diagnostic methods for FMDV have several drawbacks such as cross-reactivity, low sensitivity, and low selectivity. To overcome these drawbacks, we present an optical and electrochemical dual-modal approach for the specific detection of FMDV serotypes O and A by utilizing a magnetic nanoparticle labeling technique with resorufin β-d-glucopyranoside (res-β-glc) and β-glucosidase (β-glc), without the use of typical lateral flow assay or polymerase chain reaction. FMDV serotypes O and A were reacted with pan-FMDV antibodies that recognize all seven FMDV serotypes (O, A, C, Asia 1, SAT 1, SAT 2, and SAT 3). The antigen–antibody complex was then immobilized on magnetic nanoparticles and reacted with β-glc-conjugated FMDV type O or type A antibodies. Subsequently, the addition of res-β-glc resulted in the release of fluorescent resorufin and glucose owing to catalytic hydrolysis by β-glc. The detection limit of fluorescent signals using a fluorescence spectrophotometer was estimated to be log(6.7) and log(5.9) copies/mL for FMDV type O and A, respectively, while that of electrochemical signals using a glucometer was estimated to be log(6.9) and log(6.1) copies/mL for FMDV type O and A, respectively. Compared with a commercially available lateral flow assay diagnostic kit for immunochromatographic detection of FMDV type O and A, this dual-modal detection platform offers approximately four-fold greater sensitivity. This highly sensitive and accurate dual-modal detection method can be used for effective disease diagnosis and treatment, and will find application in the early-stage diagnosis of viral diseases and next-generation diagnostic platforms.
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Nielsen SS, Alvarez J, Bicout DJ, Calistri P, Canali E, Drewe JA, Garin‐Bastuji B, Gonzales Rojas JL, Gortázar Schmidt C, Herskin M, Michel V, Miranda Chueca MÁ, Padalino B, Pasquali P, Sihvonen LH, Spoolder H, Ståhl K, Velarde A, Viltrop A, Winckler C, De Clercq K, Gubbins S, Klement E, Stegeman JA, Antoniou S, Aznar I, Broglia A, Papanikolaou A, Van der Stede Y, Zancanaro G, Roberts HC. Scientific Opinion on the assessment of the control measures for category A diseases of Animal Health Law: Foot and Mouth Disease. EFSA J 2021; 19:e06632. [PMID: 34136003 PMCID: PMC8185624 DOI: 10.2903/j.efsa.2021.6632] [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] [Indexed: 11/11/2022] Open
Abstract
EFSA received a mandate from the European Commission to assess the effectiveness of some of the control measures against diseases included in the Category A list according to Regulation (EU) 2016/429 on transmissible animal diseases ('Animal Health Law'). This opinion belongs to a series of opinions where these control measures will be assessed, with this opinion covering the assessment of control measures for foot and mouth disease (FMD). In this opinion, EFSA and the AHAW Panel of experts review the effectiveness of: i) clinical and laboratory sampling procedures, ii) monitoring period and iii) the minimum radius of the protection and surveillance zones, and the minimum length of time the measures should be applied in these zones. The general methodology used for this series of opinions has been published elsewhere; nonetheless, the transmission kernels used for the assessment of the minimum radius of the protection zone of 3 km and of the surveillance zone of 10 km are shown. Several scenarios for which these control measures had to be assessed were designed and agreed prior to the start of the assessment. The monitoring period of 21 days was assessed as effective, and it was concluded that the protection and the surveillance zones comprise > 99% of the infections from an affected establishment if transmission occurred. Recommendations, provided for each of the scenarios assessed, aim to support the European Commission in the drafting of further pieces of legislation, as well as for plausible ad hoc requests in relation to FMD.
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Tesfaye Y, Khan F, Gelaye E. Molecular characterization of foot-and-mouth disease viruses collected from Northern and Central Ethiopia during the 2018 outbreak. Vet World 2020; 13:542-548. [PMID: 32367962 PMCID: PMC7183482 DOI: 10.14202/vetworld.2020.542-548] [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: 10/31/2019] [Accepted: 02/11/2020] [Indexed: 11/16/2022] Open
Abstract
Background and Aim Foot-and-mouth disease (FMD) is endemic in several developing countries and affects poor farmers through loss of production, death of diseased animals, and loss of animal byproducts. Forty-three samples were collected from 12 sites of five geographical located areas from suspected FMD virus (FMDV)-infected cattle during 2018. This study aimed to isolate and characterize the FMDVs using reverse transcription-polymerase chain reaction (RT-PCR) and gene sequencing. Materials and Methods Forty-three FMDV-suspected clinical samples cultured on BHK-21 cell were examined, followed by virus serotype identification using RT-PCR and gene sequencing. Results Twenty-nine (67.44%) samples were cultured on BHK-21 cell, of which 14 (32.56%) were not isolated; the 43 samples were analyzed using FMDV screening primers and serotype-specific primers. The contribution of the disease-causing serotype was serotype O of 8 (18.60%) samples, serotype A of 20 (46.51%) samples, and mixed infection (O and A) of 1 (2.33%) sample. Serotypes O and A were further characterized by phylogenetic analysis, which grouped them under East Africa 3 and Africa topotypes of genotype IV, respectively. Interestingly, serotype A was isolated for the 1st time from Keyet sub-woreda and Mulo woreda of Ethiopia, and mixed serotypes (O and A) were identified from the purchased animal. Conclusion Molecular test result, sequencing, and phylogenetic tree reconstruction analysis revealed that the 2018 FMD outbreak in Ethiopia was caused by FMDV serotypes O and A. FMDV serotype A was the predominant strain circulating in most study areas of the country. Infections in one sample with mixed serotypes of O and A were also reported. The authors recommend a vaccine matching study of those field isolated viruses with the vaccine strain.
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Affiliation(s)
- Yeneneh Tesfaye
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, Uttar Pradesh, India.,Department of Research and Development, National Veterinary Institute, P.O. Box: 19, Bishoftu, Ethiopia
| | - Fazlurrahman Khan
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, Uttar Pradesh, India.,Institute of Food Science, Pukyong National University, Busan 48513, South Korea
| | - Esayas Gelaye
- Department of Research and Development, National Veterinary Institute, P.O. Box: 19, Bishoftu, Ethiopia
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Armson B, Walsh C, Morant N, Fowler V, Knowles NJ, Clark D. The development of two field-ready reverse transcription loop-mediated isothermal amplification assays for the rapid detection of Seneca Valley virus 1. Transbound Emerg Dis 2019; 66:497-504. [PMID: 30372584 PMCID: PMC6434928 DOI: 10.1111/tbed.13051] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 09/11/2018] [Accepted: 10/19/2018] [Indexed: 12/25/2022]
Abstract
Seneca Valley virus 1 (SVV-1) has been associated with vesicular disease in swine, with clinical signs indistinguishable from those of other notifiable vesicular diseases such as foot-and-mouth disease. Rapid and accurate detection of SVV-1 is central to confirm the disease causing agent, and to initiate the implementation of control processes. The development of rapid, cost-effective diagnostic assays that can be used at the point of sample collection has been identified as a gap in preparedness for the control of SVV-1. This study describes the development and bench validation of two reverse transcription loop-mediated amplification (RT-LAMP) assays targeting the 5'-untranslated region (5'-UTR) and the VP3-1 region for the detection of SVV-1 that may be performed at the point of sample collection. Both assays were able to demonstrate amplification of all neat samples diluted 1/100 in negative pig epithelium tissue suspension within 8 min, when RNA was extracted prior to the RT-LAMP assay, and no amplification was observed for the other viruses tested. Simple sample preparation methods using lyophilized reagents were investigated, to negate the requirement for RNA extraction. Only a small delay in the time to amplification was observed for these lyophilized reagents, with a time from sample receipt to amplification achieved within 12 min. Although diagnostic validation is recommended, these RT-LAMP assays are highly sensitive and specific, with the potential to be a useful tool in the rapid diagnosis of SVV-1 in the field.
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Affiliation(s)
- Bryony Armson
- The Pirbright InstitutePirbrightSurreyUK
- Institute of Biodiversity, Animal Health and Comparative MedicineCollege of Medical, Veterinary & Life SciencesUniversity of GlasgowGlasgowUK
- GeneSys Biotech LimitedCamberleySurreyUK
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Development of a droplet digital RT-PCR for the quantification of foot-and-mouth virus RNA. J Virol Methods 2018; 259:129-134. [DOI: 10.1016/j.jviromet.2018.06.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 06/22/2018] [Accepted: 06/25/2018] [Indexed: 12/12/2022]
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9
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Howson ELA, Armson B, Lyons NA, Chepkwony E, Kasanga CJ, Kandusi S, Ndusilo N, Yamazaki W, Gizaw D, Cleaveland S, Lembo T, Rauh R, Nelson WM, Wood BA, Mioulet V, King DP, Fowler VL. Direct detection and characterization of foot-and-mouth disease virus in East Africa using a field-ready real-time PCR platform. Transbound Emerg Dis 2018; 65:221-231. [PMID: 28758346 PMCID: PMC5811823 DOI: 10.1111/tbed.12684] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Indexed: 12/21/2022]
Abstract
Effective control and monitoring of foot-and-mouth disease (FMD) relies upon rapid and accurate disease confirmation. Currently, clinical samples are usually tested in reference laboratories using standardized assays recommended by The World Organisation for Animal Health (OIE). However, the requirements for prompt and serotype-specific diagnosis during FMD outbreaks, and the need to establish robust laboratory testing capacity in FMD-endemic countries have motivated the development of simple diagnostic platforms to support local decision-making. Using a portable thermocycler, the T-COR™ 8, this study describes the laboratory and field evaluation of a commercially available, lyophilized pan-serotype-specific real-time RT-PCR (rRT-PCR) assay and a newly available FMD virus (FMDV) typing assay (East Africa-specific for serotypes: O, A, Southern African Territories [SAT] 1 and 2). Analytical sensitivity, diagnostic sensitivity and specificity of the pan-serotype-specific lyophilized assay were comparable to that of an OIE-recommended laboratory-based rRT-PCR (determined using a panel of 57 FMDV-positive samples and six non-FMDV vesicular disease samples for differential diagnosis). The FMDV-typing assay was able to correctly identify the serotype of 33/36 FMDV-positive samples (no cross-reactivity between serotypes was evident). Furthermore, the assays were able to accurately detect and type FMDV RNA in multiple sample types, including epithelial tissue suspensions, serum, oesophageal-pharyngeal (OP) fluid and oral swabs, both with and without the use of nucleic acid extraction. When deployed in laboratory and field settings in Tanzania, Kenya and Ethiopia, both assays reliably detected and serotyped FMDV RNA in samples (n = 144) collected from pre-clinical, clinical and clinically recovered cattle. These data support the use of field-ready rRT-PCR platforms in endemic settings for simple, highly sensitive and rapid detection and/or characterization of FMDV.
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Affiliation(s)
- E. L. A. Howson
- The Pirbright InstitutePirbrightSurreyUK
- Institute of Biodiversity, Animal Health and Comparative MedicineCollege of Medical Veterinary & Life SciencesUniversity of GlasgowGlasgowUK
| | - B. Armson
- The Pirbright InstitutePirbrightSurreyUK
- Institute of Biodiversity, Animal Health and Comparative MedicineCollege of Medical Veterinary & Life SciencesUniversity of GlasgowGlasgowUK
| | - N. A. Lyons
- The Pirbright InstitutePirbrightSurreyUK
- European Commission for the Control of Foot‐and‐Mouth Disease (EuFMD)Animal Production and Health DivisionFAORomeItaly
| | - E. Chepkwony
- Foot‐and‐Mouth Disease Laboratory, EmbakasiMinistry of Agriculture, Livestock, Fisheries and Blue EconomyNairobiKenya
| | - C. J. Kasanga
- Department of Biochemistry, Molecular Biology and BiotechnologyCollege of Veterinary and Medical SciencesSokoine University of Agriculture, Chuo KikuuMorogoroTanzania
| | - S. Kandusi
- Department of Biochemistry, Molecular Biology and BiotechnologyCollege of Veterinary and Medical SciencesSokoine University of Agriculture, Chuo KikuuMorogoroTanzania
| | - N. Ndusilo
- Department of Biochemistry, Molecular Biology and BiotechnologyCollege of Veterinary and Medical SciencesSokoine University of Agriculture, Chuo KikuuMorogoroTanzania
| | - W. Yamazaki
- Department of Veterinary ScienceFaculty of AgricultureUniversity of MiyazakiMiyazakiJapan
| | - D. Gizaw
- National Animal Health Diagnostic & Investigation CentreSebetaOromiaEthiopia
| | - S. Cleaveland
- Institute of Biodiversity, Animal Health and Comparative MedicineCollege of Medical Veterinary & Life SciencesUniversity of GlasgowGlasgowUK
| | - T. Lembo
- Institute of Biodiversity, Animal Health and Comparative MedicineCollege of Medical Veterinary & Life SciencesUniversity of GlasgowGlasgowUK
| | | | | | - B. A. Wood
- The Pirbright InstitutePirbrightSurreyUK
| | - V. Mioulet
- The Pirbright InstitutePirbrightSurreyUK
| | - D. P. King
- The Pirbright InstitutePirbrightSurreyUK
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Mahmoud MAEF, Elbayoumy MK, Sedky D, Ahmed S. Serological investigation of some important RNA viruses affecting sheep and goats in Giza and Beni-Suef governorates in Egypt. Vet World 2017; 10:1161-1166. [PMID: 29184360 PMCID: PMC5682259 DOI: 10.14202/vetworld.2017.1161-1166] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 09/07/2017] [Indexed: 11/16/2022] Open
Abstract
Aim The aim of this study was to investigate the seroprevalence of antibodies against foot and mouth disease (FMD), Peste des Petits ruminants (PPR), and bluetongue (BT) in sheep and goats within Giza and Beni-Suef governorates at the second half of 2016. Materials and Methods A total of 300 animals (sheep and goats) randomly selected from small stocks with no history of previous vaccination against FMD virus (FMDV), PPR, or BT viruses (BTV) and examined with competitive enzyme-linked immunosorbent assay for detection of FMD-non-structural protein, PPR, and BT antibodies. Results Seroprevalence analysis revealed that antibodies against FMDV were 40.8% and 37.1% at Giza governorate, while at Beni-Suef governorate, the percent was 36.7% and 50% in sheep and goat, respectively. Antibodies against PPR were 63.8% in sheep and 45.7% in goats at Giza governorate, whereas the results for Beni-Suef governorate were 71.7% in sheep and 45% in goats. Antibodies against BT were 45% and 37% in sheep and goats, respectively, in Giza governorate, whereas the results for Beni-Suef governorate were 80% and 55% in sheep and goats, respectively. The average of BTV antibody prevalence was significantly higher in sheep (45% and 80%) than in goats (37% and 55%) in Giza and Beni-Suef, respectively. Statistical analysis for the three viruses showed the high relation between the two governorates in case of sheep (r=0.85) and in case of goats (r=0.87). In general, a strong positive correlation was observed between the governorates (r=0.93). Conclusion Giza and Beni-Suef governorates are endemic with FMDV, PPR, and BTV. Regional plan for characterization and combating FMD, PPR, and BT is recommended to help in the achievement of the most suitable combination of the vaccine regimen.
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Affiliation(s)
- Mohamed Abd El-Fatah Mahmoud
- Department of Parasitology and Animal Diseases, Division of Veterinary Research, National Research Centre, 12622 Dokki, Giza, Egypt
| | - Mohamed Karam Elbayoumy
- Department of Parasitology and Animal Diseases, Division of Veterinary Research, National Research Centre, 12622 Dokki, Giza, Egypt
| | - Doaa Sedky
- Department of Parasitology and Animal Diseases, Division of Veterinary Research, National Research Centre, 12622 Dokki, Giza, Egypt
| | - Sahar Ahmed
- Department of Cell Biology, Division of Genetic Engineering & Biotechnology, National Research Centre, 12622 Dokki, Giza, Egypt
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Mahmoud MA, Galbat SA. Outbreak of foot and mouth disease and peste des petits ruminants in sheep flock imported for immediate slaughter in Riyadh. Vet World 2017; 10:238-243. [PMID: 28344409 PMCID: PMC5352851 DOI: 10.14202/vetworld.2017.238-243] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 12/20/2016] [Indexed: 01/02/2023] Open
Abstract
Aim: To detect and identify the causative agent or agents of the following clinical symptoms which were fever, lack of appetite, salivation, vesiculation, erosions of the buccal mucosa, nose, and feet. The signs vary from mild to severe. The mortality rate of the disease is high. The morbidity rate reaches up to 100%. Sheep also show bloody diarrhea and rapid respiration. Sheep flock resident in El-Kharje Governorate. Materials and Methods: A total of 50 serum samples and 50 buffy coat samples were collected from Marino sheep flock suffered from high mortalities, fever, lameness, diarrhea, stomatitis, and respiratory distress. PrioCHECK® foot and mouth disease virus (FMDV) nonstructural (NS) (marketable enzyme-linked immunosorbent assay [ELISA] kit) was used for revealing of the NS antibodies and liquid phase blocking enzyme immunoassay (LPBE) for identifying the FMD serotype and examined by competitive ELISA (cELISA) for detection of peste des petits ruminants (PPR) antibodies. The buffy coat samples were examined by immunocapture ELISA (Ic ELISA) for detection of PPR antigen. Results: Using PrioCHECK® FMDV NS: Commercial ELISA kit: 38/50 (76%) of the serum samples were positive for the presence of FMD NS viral proteins. In addition, using LPBE the positive samples were identified as FMD serotype O. Examination of the serum sample by cELISA for detection of PPR antibodies gave positive results in 32/50 (64%). While the Ic ELISA identified 32 (64%) positive reactors for PPR antigen. Conclusion: This study reflected high susceptibility of the imported sheep flocks to the infection with FMD and PPR viruses, which are endemic in the Kingdom of Saudi Arabia (KSA). Hence, the imported flocks that prepared for slaughter must be vaccinated with the used vaccine in KSA in the quarantine for the control of FMD especially when importation occurs from counters that are free from these diseases.
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Affiliation(s)
- M A Mahmoud
- Department of Parasitology and Animal Diseases, Division of Veterinary Research, National Research Centre, 12622 Dokki, Giza, Egypt
| | - S A Galbat
- Department of Animal Medicine, Assiut University, Faculty of Veterinary Medicine, New Valley Branch, New Valley Governorate, Egypt
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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
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13
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Namatovu A, Belsham GJ, Ayebazibwe C, Dhikusooka MT, Wekesa SN, Siegismund HR, Muwanika VB, Tjørnehøj K. Challenges for Serology-Based Characterization of Foot-and-Mouth Disease Outbreaks in Endemic Areas; Identification of Two Separate Lineages of Serotype O FMDV in Uganda in 2011. Transbound Emerg Dis 2013; 62:522-34. [PMID: 24118785 DOI: 10.1111/tbed.12170] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Indexed: 11/27/2022]
Abstract
Control of foot-and-mouth disease (FMD) in Uganda by ring vaccination largely depends on costly trivalent vaccines, and use of monovalent vaccines could improve the cost effectiveness. This, however, requires application of highly specific diagnostic tests. This study investigated outbreaks of FMD in seven Ugandan districts, during 2011, using the PrioCHECK® FMDV NS ELISA, solid-phase blocking ELISAs (SPBEs) and virus neutralization tests (VNTs), together with virological analyses for characterization of the responsible viruses. Two hundred and eighteen (218) cattle and 23 goat sera as well as 82 oropharyngeal fluid/epithelial tissue samples were collected. Some 50% of the cattle and 17% of the goat sera were positive by the PrioCHECK® FMDV NS ELISA, while SPBEs identified titres ≥80 for antibodies against serotype O FMD virus (FMDV) in 51% of the anti-NSP positive cattle sera. However, 35% of the anti-NSP positive cattle sera had SPBE titres ≥80 against multiple serotypes, primarily against serotypes O, SAT 1 and SAT 3. Comparison of SPBEs and VNTs for the detection of antibodies against serotypes O, SAT 1 and SAT 3 in 72 NSP positive cattle sera showed comparable results against serotype O (P = 0.181), while VNTs detected significantly fewer samples positive for antibodies against SAT 1 and SAT 3 than the SPBEs (P < 0.001). Detection of antibodies against serotype O was consistent with the isolation of serotype O FMDVs from 13 samples. Four of these viruses were sequenced and belonged to two distinct lineages within the East Africa-2 (EA-2) topotype, each differing from the currently used vaccine strain (EA-1 topotype). The relationships of these lineages to other serotype O viruses in the Eastern Africa region are discussed. To enhance the control of FMD in Uganda, there is need to improve the specificity of the SAT-SPBEs, perform vaccine matching and implement improved regional FMD control.
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Affiliation(s)
- A Namatovu
- National Animal Disease Diagnostics and Epidemiology Centre, Ministry of Agriculture Animal Industry and Fisheries, Entebbe, Uganda.,Department of Biotechnical and Diagnostic Sciences, College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala, Uganda
| | - G J Belsham
- National Veterinary Institute, Technical University of Denmark, Kalvehave, Denmark
| | - C Ayebazibwe
- National Animal Disease Diagnostics and Epidemiology Centre, Ministry of Agriculture Animal Industry and Fisheries, Entebbe, Uganda
| | - M T Dhikusooka
- National Animal Disease Diagnostics and Epidemiology Centre, Ministry of Agriculture Animal Industry and Fisheries, Entebbe, Uganda
| | - S N Wekesa
- Department of Environmental Management, College of Agricultural and Environmental Sciences, Makerere University, Kampala, Uganda.,Foot-and-Mouth Disease Laboratory, Ministry of Livestock Development, Nairobi, Kenya
| | - H R Siegismund
- Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - V B Muwanika
- Department of Environmental Management, College of Agricultural and Environmental Sciences, Makerere University, Kampala, Uganda
| | - K Tjørnehøj
- National Veterinary Institute, Technical University of Denmark, Kalvehave, Denmark
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14
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Wong CL, Sieo CC, Tan WS. Display of the VP1 epitope of foot-and-mouth disease virus on bacteriophage T7 and its application in diagnosis. J Virol Methods 2013; 193:611-9. [PMID: 23933075 DOI: 10.1016/j.jviromet.2013.07.053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 07/17/2013] [Accepted: 07/20/2013] [Indexed: 11/29/2022]
Abstract
Foot-and-mouth disease (FMD) is a highly contagious epidemic disease threatening the cattle industry since the sixteenth century. In recent years, the development of diagnostic assays for FMD has benefited considerably from the advances of recombinant DNA technology. In this study, the immunodominant region of the capsid protein VP1 of the foot-and-mouth disease virus (FMDV) was fused to the T7 bacteriophage and expressed on the surface of the bacteriophage capsid protein. The recombinant protein of about 42 kDa was detected by the anti-T7 tag monoclonal antibody in Western blot analysis. Phage ELISA showed that both the vaccinated and positive infected bovine sera reacted significantly with the recombinant T7 particle. This study demonstrated the potential of the T7 phage displaying the VP1 epitope as a diagnostic reagent.
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Affiliation(s)
- Chuan Loo Wong
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
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15
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Namatovu A, Wekesa SN, Tjørnehøj K, Dhikusooka MT, Muwanika VB, Siegsmund HR, Ayebazibwe C. Laboratory capacity for diagnosis of foot-and-mouth disease in Eastern Africa: implications for the progressive control pathway. BMC Vet Res 2013; 9:19. [PMID: 23347795 PMCID: PMC3562503 DOI: 10.1186/1746-6148-9-19] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2012] [Accepted: 01/16/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Accurate diagnosis is pertinent to any disease control programme. If Eastern Africa is to work towards control of foot-and-mouth disease (FMD) using the Progressive Control Pathway for FMD (PCP-FMD) as a tool, then the capacity of national reference laboratories (NRLs) mandated to diagnose FMD should match this task. This study assessed the laboratory capacity of 14 NRLs of the Eastern Africa Region Laboratory Network member countries using a semi-structured questionnaire and retrospective data from the World Reference Laboratory for FMD annual reports and Genbank® through National Centre for Biotechnology Information for the period 2006-2010. RESULTS The questionnaire response rate was 13/14 (93%). Twelve out of the 13 countries/regions had experienced at least one outbreak in the relevant five year period. Only two countries (Ethiopia and Kenya) had laboratories at biosecurity level 3 and only three (Ethiopia, Kenya and Sudan) had identified FMD virus serotypes for all reported outbreaks. Based on their own country/region assessment, 12/13 of these countries /regions were below stage 3 of the PCP-FMD. Quarantine (77%) and vaccination (54%) were the major FMD control strategies employed. The majority (12/13) of the NRLs used serological techniques to diagnose FMD, seven used antigen ELISA and three of these (25%) also used molecular techniques which were the tests most frequently requested from collaborating laboratories by the majority (69%) of the NRLs. Only 4/13 (31%) participated in proficiency testing for FMD. Four (31%) laboratories had no quality management systems (QMS) in place and where QMS existed it was still deficient, thus, none of the laboratories had achieved accreditation for FMD diagnosis. CONCLUSIONS This study indicates that FMD diagnostic capacity in Eastern Africa is still inadequate and largely depends on antigen and antibody ELISAs techniques undertaken by the NRLs. Hence, for the region to progress on the PCP-FMD, there is need to: implement regional control measures, improve the serological diagnostic test performance and laboratory capacity of the NRLs (including training of personnel as well as upgrading of equipment and methods, especially strengthening the molecular diagnostic capacity), and to establish a regional reference laboratory to enforce QMS and characterization of FMD virus containing samples.
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Affiliation(s)
- Alice Namatovu
- National Animal Disease Diagnostics and Epidemiology Centre, Ministry of Agriculture Animal Industry and Fisheries, P. O. Box 513, Entebbe, Uganda
- Department of Biotechnical and Diagnostic Sciences, College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, P. O. Box 7062, Kampala, Uganda
| | - Sabenzia Nabalayo Wekesa
- Department of Environmental Management, College of Agricultural and Environmental Sciences, Makerere University, P. O. Box 7062/7298, Kampala, Uganda
- Foot-and-Mouth Disease Laboratory, Ministry of Livestock Development, P.O. Box 18021, Embakasi, Nairobi, Kenya
| | - Kirsten Tjørnehøj
- National Veterinary Institute, Technical University of Denmark, Lindholm, Kalvehave, DK 4771, Denmark
| | - Moses Tefula Dhikusooka
- National Animal Disease Diagnostics and Epidemiology Centre, Ministry of Agriculture Animal Industry and Fisheries, P. O. Box 513, Entebbe, Uganda
| | - Vincent B Muwanika
- Department of Environmental Management, College of Agricultural and Environmental Sciences, Makerere University, P. O. Box 7062/7298, Kampala, Uganda
| | | | - Chrisostom Ayebazibwe
- National Animal Disease Diagnostics and Epidemiology Centre, Ministry of Agriculture Animal Industry and Fisheries, P. O. Box 513, Entebbe, Uganda
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16
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Almassian DR, Cockrell LM, Nelson WM. Portable nucleic acid thermocyclers. Chem Soc Rev 2013; 42:8769-98. [DOI: 10.1039/c3cs60144g] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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17
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Jamal SM, Ferrari G, Hussain M, Nawroz AH, Aslami AA, Khan E, Murvatulloev S, Ahmed S, Belsham GJ. Detection and genetic characterization of foot-and-mouth disease viruses in samples from clinically healthy animals in endemic settings. Transbound Emerg Dis 2011; 59:429-40. [PMID: 22212855 DOI: 10.1111/j.1865-1682.2011.01295.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A total of 1501 oral swab samples from Pakistan, Afghanistan and Tajikistan were collected from clinically healthy animals between July 2008 and August 2009 and assayed for the presence of foot-and-mouth disease virus (FMDV) RNA. The oral swab samples from two (of four) live animal markets in Pakistan (n = 245), one (of three) live animal market in Afghanistan (n=61) and both the live animal markets in Tajikistan (n=120) all tested negative. However, 2 of 129 (∼2%) samples from Gondal and 11 of 123 (9%) from Chichawatni markets in Pakistan were positive for FMDV RNA. Similarly, 12 of 81 (15%) samples from Kabul and 10 of 20 (50%) from Badakhshan in Afghanistan were found to be positive. Serotypes A and O of FMDV were identified within these samples. Oral swab samples were also collected from dairy colonies in Harbanspura, Lahore (n=232) and Nagori, Karachi (n=136), but all tested negative for FMDV. In the Landhi dairy colony, Pakistan, a cohort of 179 apparently healthy animals was studied. On their arrival within the colony, thirty-nine (22%) of these animals were found positive for FMDV RNA (serotype A was identified), while 130 (72.6%) had antibodies to FMDV non-structural proteins. Thus, newly introduced animals may be a significant source of the disease in the colony. Only two animals from the cohort were detected as becoming positive for FMDV RNA during a follow-up period of 4months; however, only 10 animals remained negative for anti-NSP antibodies during this period.
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Affiliation(s)
- S M Jamal
- National Veterinary Laboratory, Islamabad, Pakistan Department of Microbiology, Quaid-i-Azam University, Islamabad, Pakistan
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18
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Halasa T, Boklund A, Cox S, Enøe C. Meta-analysis on the efficacy of foot-and-mouth disease emergency vaccination. Prev Vet Med 2011; 98:1-9. [DOI: 10.1016/j.prevetmed.2010.08.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2009] [Revised: 08/23/2010] [Accepted: 08/26/2010] [Indexed: 11/25/2022]
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