Concentration and Prevalence of Escherichia coli O157 in Cattle Feces at Slaughter
AUTOR(ES)
Omisakin, F.
FONTE
American Society for Microbiology
RESUMO
The concentration and prevalence of Escherichia coli O157 in cattle feces at the time of slaughter was studied over a 9-week period from May to July 2002. Fecal samples (n = 589) were collected from the rectums of slaughtered cattle, and the animal-level prevalence rate was estimated to be 7.5% (95% confidence interval [CI], 5.4 to 9.6%) while the group prevalence was 40.4% (95% CI, 27.7 to 53.2%). Of the 44 infected animals detected, 9% were high shedders that contained E. coli O157 at concentrations of >104 CFU g−1. These 9% represented >96% of the total E. coli O157 produced by all animals tested. All isolates possessed the vt2 gene, 39 had the eaeA gene, and a further five had the vt1 gene also. The presence of high-shedding animals at the abattoir increases the potential risk of meat contamination during the slaughtering process and stresses the need for correctly implemented hazard analysis and critical control point procedures.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=154535Documentos Relacionados
- Correlation of enterohemorrhagic Escherichia coli O157 prevalence in feces, hides, and carcasses of beef cattle during processing
- Prevalence of Escherichia coli O157 in Cattle Feeds in Midwestern Feedlots
- Rectal Carriage of Enterohemorrhagic Escherichia coli O157 in Slaughtered Cattle
- Cattle Water Troughs as Reservoirs of Escherichia coli O157
- Longitudinal Study of Escherichia coli O157 in a Cattle Finishing Unit
