Occurrence of yersiniosis and listeriosis in wild boars in Japan.
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.
Hayashidani
Hideki
H
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
Kanzaki
Nobuo
N
Kaneko
Yuji
Y
Okatani
Alexandre Tomomitsu
AT
Taniguchi
Takahide
T
Kaneko
Ken-ichi
K
Ogawa
Masuo
M
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*