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| Ferreira,M.R.A.; Stella,A.E.; Freitas-Filho,E.G.; Silva,T.S.; Nascimento,K.A.; Pinto,J.F.N.; Dias,M.; Moreira,C.N.. |
| ABSTRACT This study determined the distribution of stx1 and stx2 genes in Escherichia coli isolated from dairy herds with regard to animal age, season, and farm production-scale, and analyzed the phylogenetic distribution of the groups A, B1, B2, and D of 276 isolates of bovine feces Shiga toxin-producing E. coli (STEC). The stx1 profile was the most common, detected in 20.4% (202/990) of the isolates, followed by stx2 (4.54%, 45/990) and stx1+stx2 (2.92%, 29/990). The stx1 gene was detected more frequently in calves than in adult animals. In the dry season (winter), the presence of stx1+stx2 profile in cattle feces was higher than in the rainy season (summer), while no significant changes were observed between seasons for the stx1 and stx2 profiles. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Shiga toxin-producing Escherichia coli (STEC); Phylogenetic STEC groups; STEC reservoirs Stx1; Stx2. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000601807 |
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