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Methicillin-resistant Staphylococcus aureus (MRSA) contamination of retail pork

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Recent reports of isolation of methicillin-resistant Staphylococcus aureus (MRSA) from food animals have raised concern about the potential for foodborne transmission. This study evaluated the prevalence of MRSA contamination of retail pork from 4 Canadian provinces.
19 November 2010
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Recent reports of isolation of methicillin-resistant Staphylococcus aureus (MRSA) from food animals have raised concern about the potential for foodborne transmission. This study evaluated the prevalence of MRSA contamination of retail pork from 4 Canadian provinces.

Methicillin-resistant Staphylococcus aureus was isolated from 31/402 [7.7%, 95% confidence interval (CI): 5.5% to 10.7%] of samples. Adjusted for clustering at the provincial level, the prevalence was 5.8% (95% CI% 2.2% to 14.4%). The most common clone was Canadian epidemic MRSA (CMRSA)-5 (12/31, 39%), which has been widely identified in horses and horse personnel, but not in pigs. Ten of the 31 (32%) isolates were nontypable by pulsed-field gel electrophoresis (PFGE) and belonged to spa 539/t034, a clone that is associated with food animals internationally. Nine (29%) isolates were CMRSA-2, a common human epidemic clone that has been found in pigs in Canada.

While the relevance of contamination of retail meat is currently unclear, further study is required to determine if food may be a source of infection.

J. S. Weese, R. Reid-Smith, J. Rousseau and B. Avery. Methicillin-resistant Staphylococcus aureus (MRSA) contamination of retail pork. Can. Vet. J. 2010. Vol. 50: 749-52..

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This area is not intended to be a place to consult authors about their articles, but rather a place for open discussion among pig333.com users.
18-Apr-2011spencer jonesspencer jonesSome clinical studies demonstrate that the nutritional supplement, colloidal silver, which has some pretty interesting antimicrobial qualities, is also very effective against MRSA. See www.ColloidalSilverCuresMRSA.com
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