Prevalence of swine Torque teno virus genogroups 1 and 2 in Japanese swine with suspected post-weaning multisystemic wasting syndrome and porcine respiratory disease complex

Osamu Taira, Hirohito Ogawa, Aki Nagao, Kotaro Tuchiya, Tetsuo Nunoya, Susumu Ueda

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Torque teno virus (TTV) was first isolated from a human hepatitis patient in 1997. TTV was also identified in several animals, including pigs, cattle, sheep, cats and dogs. In this study, we analysed the prevalence of swine TTV genogroups 1 (TTV1) and 2 (TTV2) in Japanese swine populations with suspected post-weaning multisystemic wasting syndrome and porcine respiratory disease by using a nested polymerase chain reaction method. Of 153 serum samples from 16 different herds in Japan, TTV1 was detected in 46 samples (30%), TTV2 in 47 samples (31%) and both in 15 samples (10%). There was no significant difference in the detection rate among geographical regions. The overall prevalence rate of TTV genogroups was significantly lower in ≤30-day-old pigs (11%) compared to that in older age groups (54-82%). These results suggest that swine TTV may be widespread in post-weaning pigs and could play aetiological roles in pig diseases in Japan. This is the first report on the prevalence of swine TTV in Japan.

Original languageEnglish
Pages (from-to)347-350
Number of pages4
JournalVeterinary Microbiology
Volume139
Issue number3-4
DOIs
Publication statusPublished - Nov 18 2009
Externally publishedYes

Keywords

  • Prevalence
  • Swine
  • Torque teno virus

ASJC Scopus subject areas

  • Microbiology
  • veterinary(all)

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