Seroepidemiology of bluetongue disease in Andhra Pradesh, India

A serological survey involving 976 sera samples from different species of a nimals was conducted employing C.ELISA. The study revealed the presence of BTV antibodies in 45.71 % of sheep, 43.56 % of goats, 33.11 % of cattle and 20 % of buffaloes. Prevalence of BTV antibodies was more in crossbreeds th an in native sheep and cattle. Neutralizing antibodies to 13 BTV serotypes 2, 4, 6, 7, 8, 9, 12, 13, 14, 16,17,18 and 19 were detected in different pa rts of the state. Region-wise seroprevalence was 46.75 % in Rayalaseema, 46 .05 % in Telangana and 33.54 % in Costal regions of Andhra Pradesh.