Hemagglutinating encephalomyelitis virus infection in Korean suckling pigs

Kim, Eun Mi; Kim, Hye Kwon; Park, Seong Jun; Lee, Chul Seung; Luo, Yuzi; Moon, Hyoung Joon; Yang, Jeong Sun; Park, BongKyun

Korean Journal of Veterinary Research 2007;47(4):425-428.

Eun Mi Kim¹, Hye Kwon Kim¹, Seong Jun Park¹, Chul Seung Lee², Yuzi Luo¹, Hyoung Joon Moon¹, Jeong Sun Yang¹, BongKyun Park¹

¹College of Veterinary Medicine and BK21 Program for Veterinary Science, Seoul National University
²Research Unit, Green Cross Veterinary Products

Abstract

From January to June 2006, 54 suckling pigs had been submitted in virology lab., College of Veterinary Medicine, Seoul National University. All pigs had suffered from various symptoms such as respiratory sign, enteric signs, neurologic signs, etc. Among 54 pigs, 24 pigs (44.4%) were positive for porcine hemagglutinating encephalomyelitis virus (HEV) through reverse transcription-nested polymerase chain reaction. According to this result, HEV infections seemed to be prevalent and widespread in Korean swine farms, and the infection is associated with respiratory signs and neurologic signs more than enteric signs. The HEV positive pigs showing respiratory signs were co-infected with viruses such as PRRSV, and PCV2, or bacteria such as Pasteurella spp. The single infection may subclinically have an influence on outbreak of other respiratory pathogens in suckling pigs.

Key Words: clinical signs, porcine hemagglutinating encephalomyelitis virus, suckling pigs