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Occurrence and Molecular epidemiology of Methicillin Resistant Staphylococcus aureus (MRSA) on farm, at slaughter and pork


Swine barn

  Swine specific strain of methicillin resistant Staphylococcus aureus (MRSA) has been identified from pigs in    

   various parts of the world. Data on the occurrence and magnitude of MRSA in swine herds reared in various

    production systems in the United States and its potential transmission and possible implications for public

    health via occupational and/or food safety means is limited. This serial cross-sectional study targets a set

    of randomly identified conventional swine farms to determine MRSA in pigs. We also assessed the

    likelihood of carriage or cross-contamination at slaughter and retail level and determine the potential food

                                                                                       safety implications. 



  • Determine the occurrence and prevalence of MRSA among swine herds on-farm, at lairage and carcass swabs and retail pork.


  • Compare phenotypic and genotypic relatedness of MRSA isolated on-farm, at slaughter and from retail pork.


  • Determine genotypic relatedness of MRSA isolated from pigs and pork with that of previously reported in humans and swine. 


IDMEL Personnel:

Bayleyegn Molla (Co-Investigator)

Wondwossen Gebreyes (Principal Investigator)

Other Collaborators:

Charlene R. Jackson (USDA-ARS, Athens, GA)

Tara Smith (University of Iowa)

Peter Davies (University of Minnesota)


National Pork Board