SOME ASPECTS ON THE EPIZOOTIOLOGY OF RECENT FOOT AND MOUTH DISEASE OUTBREAKS IN DAIRY FARMS IN SAUDI ARABIA
Farag, M., Al-Sukayran, A., Mazloum, K., Al-Bokmy, A. (1999). SOME ASPECTS ON THE EPIZOOTIOLOGY OF RECENT FOOT AND MOUTH DISEASE OUTBREAKS IN DAIRY FARMS IN SAUDI ARABIA. EKB Journal Management System, 40.2(80), 260-271. doi: 10.21608/avmj.1999.182488
M.A. Farag; A. Al-Sukayran; K.S. Mazloum; A.M. Al-Bokmy. "SOME ASPECTS ON THE EPIZOOTIOLOGY OF RECENT FOOT AND MOUTH DISEASE OUTBREAKS IN DAIRY FARMS IN SAUDI ARABIA". EKB Journal Management System, 40.2, 80, 1999, 260-271. doi: 10.21608/avmj.1999.182488
Farag, M., Al-Sukayran, A., Mazloum, K., Al-Bokmy, A. (1999). 'SOME ASPECTS ON THE EPIZOOTIOLOGY OF RECENT FOOT AND MOUTH DISEASE OUTBREAKS IN DAIRY FARMS IN SAUDI ARABIA', EKB Journal Management System, 40.2(80), pp. 260-271. doi: 10.21608/avmj.1999.182488
Farag, M., Al-Sukayran, A., Mazloum, K., Al-Bokmy, A. SOME ASPECTS ON THE EPIZOOTIOLOGY OF RECENT FOOT AND MOUTH DISEASE OUTBREAKS IN DAIRY FARMS IN SAUDI ARABIA. EKB Journal Management System, 1999; 40.2(80): 260-271. doi: 10.21608/avmj.1999.182488

SOME ASPECTS ON THE EPIZOOTIOLOGY OF RECENT FOOT AND MOUTH DISEASE OUTBREAKS IN DAIRY FARMS IN SAUDI ARABIA

Assiut Veterinary Medical Journal
Article 19, Volume 40.2, Issue 80, January 1999, Page 260-271  XML PDF (3.79 MB)
Document Type: Research article
DOI: 10.21608/avmj.1999.182488
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Authors
M.A. Farag1; A. Al-Sukayran2; K.S. Mazloum2; A.M. Al-Bokmy2
1Dept. of Foot and Mouth Disease, Veterinary Serum and Vaccine Research Institute, Abbassia, Cairo, Egypt.
2National Agriculture and Water Research Center, Ministry of Agriculture and Water, Saudi Arabia
Abstract
Foot and Mouth Disease (FMD) outbreaks in eight separate dairy farms in Saudi Arabia from February 1992 to February 1998 have been studied. Four outbreaks were caused by serotype 0, three with serotype A and one with serotype Asia 1. The morbidity rates ranged from 4 to 69%. Clinical cases were observed at between 2 and 167 days after the last herd vaccination using a quadrivalent commercial vaccine containing O, AC and Asia 1 strains of FMD virus. The relationship between the vaccine strains and the viruses isolated during the outbreaks was assessed by the two dimensional neutralisation test and results expressed as r values. The 3 viruses caused type A outbreaks showed antigenic variation as to compared to the reference vaccine strain A22/Iraq (r= Manisa and Asia 1/India/79. The epizootiological data of each outbreak and the relationship between the outbreak virus isolate and the relevant vaccine strain(s) are interpreted and the possible factors contributing to the recurrence of FMD outbreaks in Saudi dairy farms are discussed.
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Keywords
Keywords: Foot and Mouth Disease; Virus isolation; Typing; Antigenic variation; Epizootiology; Dairy farms; Saudi Arabia
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