Sero-prevalence against a H3 subtype isolate of swine influenza virus

Kim, Jong-Rhan; Rhie, Jay-Young; Song, Dae-Sub; Oh, Jin-Sik; Park, Bong-Kyun

Korean Journal of Veterinary Research 2002;42(4):523-529.

Jong-Rhan Kim, Jay-Young Rhie, Dae-Sub Song, Jin-Sik Oh, Bong-Kyun Park

College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University

돼지인플루엔자바이러스 A형 H3 국내 분리주에 대한 혈청학적 역학조사

김종란, 이재영, 송대섭, 오진식, 박봉균

서울대학교 수의과대학 수의학과

Abstract

A Total of 703 swine sera from 55 swine farrns (Mar. 1998 through Feb. 2001) were nation-wide collected for the presence of the antibody to influenza A virus H3 subtype isolate. The presence of antibody was tested by hernagglutination inhibition with chicken red blood cells and seropositiveness was determined by HI titer ${geq}1$: 40. Sero-prevalence was evaluated based on year, season, region and age, respectively. In consequence, there were seme differences by year, season and region, respectively. High susceptibility was routinely observed in 60 and 90 day-old piglets. Therefore, it seems that the sero-prevalence to swine influenza virus H3 subtype isolate is useful for the prevention and control of swine influenza in Korea.

Key Words: Influenza A virus, H3 subtype, Hemagglutination inhibiton, Sero-prevalence