Prevalence of Yersinia
enterocolitica in Raw Cow's Milk Collected from Stables of Mexico City
Yersinia enterocolitica has been isolated from a batch of pork-derived products, from healthy and diseased animals, and from different types of milk and dairy products, among others. We studied the prevalence and diversity of Y. enterocolitica isolated from raw cow's milk
collected from stables in Mexico City. Of the 1,300 samples analyzed, Y. enterocolitica was isolated in 454, with an average of 25% positive samples for each stable. Of the total isolated bacteria of the Yersinia genus, 44.25% were Y. enterocolitica, 18.28% were Y.
kristensenii, 13.65% were Y. intermedia, 14.85% were Y. frederiksenii, and 9.14% were Y. aldovae. Among the different strains of Y. enterocolitica, biotype 1A was present in 70%, biotype 2 in 13.2%, biotype 3 in 8.54%, and biotype 4 in 8.15% of samples. Serotypes
O:5, O:3, O:2, and O:9 were found in all biotypes identified. There were no statistically significant differences in the isolation of this bacterium with respect to the stables where they were found, although there was significant difference regarding the time of year. The data obtained in
this work show the need to protect public health in Mexico against infections transmitted by raw cow's milk.
Document Type: Research Article
Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Carpio y Plan de Ayala s/n, Colonia Santo Tomas, C.P. 11340, Mexico City, Mexico
Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Carpio y Plan de Ayala s/n, Colonia Santo Tomas, C.P. 11340, Mexico City, Mexico.
Departamento de Biotecnología, Universidad Autónoma Metropolitana–Iztapalapa, San Rafael Atlixco # 186, Colonia Vicentina, C.P. 09340, Mexico City, Mexico
Publication date: April 1, 2013
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