Sero-prevalence of swine influenza virus (H1N1, H3N2) In Korea

Yoon, Jai-soon; Park, Bong-kyun; Han, Jeong-hee

Korean Journal of Veterinary Research 2007;47(3):273-279.

Jai-soon Yoon¹, Bong-kyun Park², Jeong-hee Han¹

¹School of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University
²College of Veterinary Medicine, Seoul National University

국내의 돼지 인플루엔자 바이러스(H1N1, H3N2)의 혈청학적 조사

윤재순¹, 박봉균², 한정희¹

¹강원대학교 수의학부대학
²서울대학교 수의과대학

Abstract

Swine influenza is an acute, infectious respiratory disease caused by type A influenza viruses in pigs. In the previous studies, serological surveys have indicated the presence of H3N2 swine influenza virus (SIV) since 1995 in Korea. And the percentage of the antibody-positive rate was 39.12% in the survey determining the prevalence of H1N1 SIV antibodies in 2002. The purpose of this study was therefore to investigate the sero-prevalence of SIV regard to the age of the pig and the season between June 2004 and May 2005. In this study, a total of 932 sera were used. These sera were randomly selected from blood samples, which were submitted to Department of Veterinary Pathology, Kangwon National University and Department of Veterinary Virology, Seoul National University from June 2004 to May 2005. These sera have been tested by ELISA test kit (IDEXX Lab, USA) for the SIV H3N2, H1N1 respectively. SAS version 9.1 was used for the statistical analysis based on the age of the pig and the season. The overall sero-prevalence of the antibody against H3N2 SIV was 20.82% (194/932). The overall sero-prevalence of the antibody against H1N1 SIV was 37.23% (347/932). The overall dual sero-prevalence of the antibody against H3N2 and H1N1 SIV was 10.62% (99/932). H3N2 has significant difference in statistically regarding the age of the pig and the season (p<0.0001). H1N1 has significant difference in statistically regarding the age of the pig (p<0.0001) but has not significant difference in statistically regarding the season (p=0.5882).

Key Words: Korea, sero-prevalence, swine influenza, the age of the pig, the season