Resumo

RIVAS-RUIZ, Cristhoper Michel et al. Detection of Shiga toxin-Producing Escherichia coli in asymptomatic cattle in the southern Sonora, Mexico. Ecosistemas y recur. agropecuarios [online]. 2020, vol.7, n.2, 00010.  Epub 22-Dez-2020. ISSN 2007-901X.  https://doi.org/10.19136/era.a7n2.2240.

The breeding and fattening of cattle are necessary for the production of meat; in Mexico it is an essential activity. Cattle is an asymptomatic carrier of Shiga toxinproducing Escherichia coli (STEC), and they are considered the main reservoir and super-shedder of serotype O157: H7. The aim of this work was to identify the STEC O157: H7 serotype in asymptomatic cattle raised in southern Sonora, Mexico, using multiplex PCR in order to understand of its propagation capacity. The incidence of serotype O157:H7 was 3.1% and STEC non-O157 was 19.8%. These results suggest cattle as a primary reservoir of STEC in this region of the country; nonetheless, studies are still needed to establish whether excreted strains contaminate the food, environment and/or water streams.

Palavras-chave : Asymptomatic bovines; Mexico; O157:H7; STEC; super-shedder.

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