title: Occurrence of yersiniosis and listeriosis in wild boars in Japan.
abstract: 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.
authors.affiliation: Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan. eisei@cc.tuat.ac
authors.forename: Hideki
authors.initials: H
authors.lastname: Hayashidani
authors.forename: Nobuo
authors.initials: N
authors.lastname: Kanzaki
authors.forename: Yuji
authors.initials: Y
authors.lastname: Kaneko
authors.forename: Alexandre Tomomitsu
authors.initials: AT
authors.lastname: Okatani
authors.forename: Takahide
authors.initials: T
authors.lastname: Taniguchi
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Kaneko
authors.forename: Masuo
authors.initials: M
authors.lastname: Ogawa
mesh_terms: D000367:Age Factors; D000818:Animals; D000835:Animals, Wild; D005243:Feces / Q000382:microbiology; D005260:Female; D007564:Japan / Q000453:epidemiology; D008087:Listeria / Q000145:classification / Q000302:isolation & purification / Q000472:pathogenicity; D008088:Listeriosis / Q000453:epidemiology / Q000662:veterinary*; D008297:Male; D012703:Serotyping / Q000662:veterinary; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology* / Q000382:microbiology; D014774:Virulence; D015007:Yersinia / Q000145:classification / Q000302:isolation & purification / Q000472:pathogenicity; D015009:Yersinia Infections / Q000453:epidemiology / Q000662:veterinary*