Epizootological situation of equine influenza
2002
Chenchev, I. | Martinov, S. (National Diagnostic Veterinary Medical Institute, Sofia (Bulgaria))
The first epizootic of equine ifluenza in Bulgaria was in 1978 while the last one was identified in 1989-1992. The virus that caused the last epizootic in Bulgaria was antigenically related to the A2 Miami 1/63/H3N8/ strain. After a screening serological examination of equine population, it was established that antibodies against the A2 Miami 1/63/ H3N8/ serotype were the commonest while those to the A1 Prague 1/56/H7N7/ serotype were less in the absence of vaccination. The respective percentages against A2 Miami 1/63/H3N8/ in 1999 were 59% in adult horses and 56% - in mares.
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