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. 2009 Aug;75(16):5421-3.
doi: 10.1128/AEM.00459-09. Epub 2009 Jun 19.

Prevalence of Escherichia coli O157:H7 in organically and naturally raised beef cattle

S Reinstein  1 , J T Fox, X Shi, M J Alam, D G Renter, T G Nagaraja
Affiliations

Prevalence of Escherichia coli O157:H7 in organically and naturally raised beef cattle

S Reinstein et al. Appl Environ Microbiol. 2009 Aug.

Abstract

We determined the prevalence of Escherichia coli O157:H7 in organically and naturally raised beef cattle at slaughter and compared antibiotic susceptibility profiles of the isolates to those of isolates from conventionally raised beef cattle. The prevalences of E. coli O157:H7 were 14.8 and 14.2% for organically and naturally raised cattle, respectively. No major difference in antibiotic susceptibility patterns among the isolates was observed.

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Figures

FIG. 1.
FIG. 1.
Prevalences of E. coli O157:H7 in organically and naturally raised beef cattle at slaughter. For each production system, bars not labeled with the same letter represent significantly different levels at P of <0.05.
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