Abstract
Foot-and-mouth disease (FMD) is an economically devastating disease of cloven-hoofed animals including wildlife and semidomesticated species of mithun and yak. A serological survey was conducted during the months of June-July 2014 to gather evidence of FMD virus (FMDV) activity in yaks maintained in a farm located at Nyukmadung village of West Kameng district in Arunachal Pradesh. Serum samples were collected from 70 yaks and 3AB nonstructural protein (NSP) ELISA was performed to assess FMDV NSPantibodies (NSP-Abs). There appeared a positive serological response from 21 (30%) animals providing retrospective evidence of their previous exposure to FMDV, which correlated with the collected epidemiological information. Not a single animal borne post reported outbreak in October 2009 was found positive in NSP ELISA thereby ruling out any incidence of FMD in the farm after 2009. Also, persistence of 3AB NSP-Ab through 5 years post-outbreak was evident in the infected yaks.
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