Discovery of fur seal feces-associated circular DNA virus in swine feces in Japan

J Vet Med Sci. 2017 Oct 7;79(10):1664-1666. doi: 10.1292/jvms.16-0642. Epub 2017 Aug 27.


Fur seal feces-associated circular ssDNA virus (FSfaCV) was discovered in a pig for the first time in Japan using a next-generation sequencer with duplex-specific nuclease. Full genome of the virus showed approximately 92% similarity to FSfaCVs from New Zealand fur seals. Furthermore, we investigated the prevalence of the ssDNA virus in 85 piglets in Japan, and 65 piglets were positive (76%) for the virus.

Keywords: duplex-specific nuclease; fur seal feces-associated circular ssDNA virus; next-generation sequencer; pig; ssDNA.

MeSH terms

  • Animals
  • Circoviridae Infections / epidemiology
  • Circoviridae Infections / genetics
  • Circoviridae Infections / veterinary*
  • Circovirus / genetics*
  • DNA, Circular / analysis*
  • DNA, Circular / genetics
  • Feces / virology*
  • Fur Seals / virology*
  • Genome, Viral / genetics
  • Swine
  • Swine Diseases / virology*


  • DNA, Circular