Prevalence of bovine viral diarrhea virus from Korean native cattle farms in Jeju

Bovine viral diarrhea virus (BVDV) is an RNA belonging to Pestivirus in the family Flaviviridae. BVDV has economic significance for livestock industry because of its association with acute disease, fetal loss, and birth persistently infected (PI) animals. This study aimed investigate infection rates Korean native cattle farms Jeju further planning a control program Province. antibodies antigens were tested 15,842 sera collected from 302 herds between January 2014 June 2017 using enzyme-linked immunosorbent assay (ELISA). Viral antigen was detected by reverse transcription-polymerase chain reaction 60 that ELISA-positive. found 90.7% (274/302) 61.1% (9,678/15,842) cows. 13.2% (40/302) 0.4% (61/15,842) The oldest animal group (> 8 years) exhibited highest sero-positive (91%), while youngest (< 1 had positivity (0.52%). Of antigen-positive sera, types 2 36 12 respectively. Additionally, six animals considered be PI as continually annual examination.