Detection and genetic characterization of foot-and-mouth disease viruses in samples from clinically healthy animals in endemic settings
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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.
|Journal||Transboundary and Emerging Diseases|
|Number of pages||12|
|Publication status||Published - Oct 2012|
© 2011 Blackwell Verlag GmbH.
- Afghanistan/epidemiology, Animals, Buffaloes, Cattle, Dairying, Endemic Diseases/veterinary, Foot-and-Mouth Disease/epidemiology, Foot-and-Mouth Disease Virus/genetics, Genetic Variation, Logistic Models, Multivariate Analysis, Pakistan/epidemiology, Phylogeny, RNA, Viral/isolation & purification, Real-Time Polymerase Chain Reaction, Reverse Transcriptase Polymerase Chain Reaction, Tajikistan/epidemiology