yersinia enterocolitica among small wild mammals in france.a survey of yersinia enterocolitica was made in two french areas (indre and alsace) in several components of the terrestrial ecosystem. y. enterocolitica has been isolated from several habitats and from numerous species of small mammals. the trap line method enabled us to estimate the density of the two abundant small mammal species, microtus arvalis and apodemus sylvaticus, and the densities of y. enterocolitica carriers. the frequency of isolation was high when temperatures were low, but did n ...1979400946
incidence of yersinia enterocolitica in raw milk in eastern france.a total of 75 raw milk samples collected from a central dairy or from retailers in alsace, france, were analyzed for the presence of yersinia enterocolitica. three procedures were used: enrichment at 4 degrees c for 1 month; enrichment in modified rappaport medium at room temperature for 72 h after a preenrichment at 4 degrees c for 1 month; and enrichment in a new medium containing sucrose, tris(hydroxymethyl)aminomethane, sodium azide, and ampicillin (psta) at 28 degrees c for 48 h after a pre ...19817195187
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