[Initial isolation and characterization of Yersinia enterocolitica in human feces in Argentina].
The isolation of Yersinia enterocolitica from a child's feces with an acute diarrhea is reported for the first time in Argentina. The strain was classified as belonging to the biotype 4 of Wauters, serotype O:3, phage type VIII. The virulence-associated test of autoagglutination, calcium dependency and production of heat-stable enterotoxin were positive, whereas neither lethality for the adult mouse by oral route, nor invasiveness by using the Serény test in the mouse, were demonstrated. A plasmid of approximately 40 Mdal was detected. The suckling mouse LD50 was 4.1 x 10(6) cells. These characteristics are in agreement with those reported for most of the Yersinia enterocolitica strains belonging to the same serotype.
D000818:Animals; D002648:Child; D003967:Diarrhea / Q000382:microbiology*; D005243:Feces / Q000382:microbiology*; D006801:Humans; D008297:Male; D051379:Mice; D015009:Yersinia Infections / Q000382:microbiology*; D015008:Yersinia enterocolitica / Q000145:classification / Q000302:isolation & purification*
Primer aislamiento y caracterización de Yersinia enterocolitica en heces humanas en Argentina.