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Incidence of Yersinia Species in Meat Samples Purchased in Rio de Janeiro, Brazil
Marcia Barbosa Warnken1, Marly Paiva Nunes1, Alba Lúcia Solino Noleto1
1Instituto de Microbiologia, Universidade Federal do Rio de Janeiro, Bloco I, Ilha da Cidade Universitaria, C. P. 68040, CEP 21941, Rio de Janeiro, RJ-Brazil.
Abstract:
Twenty-five samples of several types of meat purchased at supermarkets in Rio de Janeiro were analyzed for presence of Yersinia . Species were isolated from 80% of beef and chicken giblets, 60% of ground beef and beef liver and 20% of pork, Fifteen strains were identified as Yersinia intermedia , 9 as Yersinia enterocolitica , 4 as Yersinia kristensenii and 1 as Yersinia frederiksenii . Two strains of Y. intermedia , serotype 0:13,7 were positive in both the autoagglutination and calcium-dependency tests. Two strains of atypical Y. intermedia (serotype 0:29 and one not typable) and one strain of atypical Y. enterocolitica , serotype 0:16; were positive only in the auto-agglutination test. Seventeen strains isolated from meat produced heat stable enterotoxin.
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