From December 1994 to February 1995, 131 wild boars (Sus scrofa leucomysta) living in a mountainous area in Japan were examined for yersiniosis and listeriosis. Of 131 wild boars, 76 (58%) were males and 55 (42%) were females. Four Yersinia spp. including Y. pseudotuberculosis, Y. enterocolitica, Y. frederiksenii, and Y. aldovei, were isolated from 49 (37%) of 131 wild boars. Yersinia pseudotuberculosis was isolated from five (4%) of 131 wild boars. All Y. pseudotuberculosis isolates were serotype 4b and harbored virulence plasmids. Yersinia pseudotuberculosis was isolated only from boars under 2-yr-old. No human pathogenic Y. enterocolitica was isolated. Listeria monocytogenes was isolated from two (1%) of the wild boars and both isolates were serotype 4b. These findings indicated that wild boar could be a reservoir of Y. pseudotuberculosis and L. monocytogenes in Japan.

This article has been cited by other articles:

				K. Jalava, S. Hallanvuo, U.-M. Nakari, P. Ruutu, E. Kela, T. Heinasmaki, A. Siitonen, and J. P. Nuorti Multiple Outbreaks of Yersinia pseudotuberculosis Infections in Finland J. Clin. Microbiol., June 1, 2004; 42(6): 2789 - 2791. [Abstract] [Full Text] [PDF]