Methicillin-resistant Staphylococcus aureus containing mecC in Swedish dairy cows

作者：Unnerstad Helle Ericsson^*; Bengtsson Bjorn; Af Rantzien Margareta Horn; Borjesson Stefan

来源：Acta Veterinaria Scandinavica, 2013, 55(1): 6.

DOI：10.1186/1751-0147-55-6

• MRSA
• Staphylococcus aureus
• mecC
• Mastitis
• Dairy cows

Background: Hitherto, methicillin-resistant Staphylococcus aureus (MRSA) has not been detected in Swedish cattle. However, due to the report of mecC, a novel homologue to the mecA gene, there was reason to re-evaluate susceptibility results from strain collections of Staphylococcus aureus and test suspected isolates for the presence of mecC.
Findings: Bovine isolates of S. aureus with elevated minimum inhibitory concentrations of beta-lactams were retrospectively tested for presence of mecC. In four of the isolates mecC was detected.
Conclusion: In Sweden, this is the first finding of MRSA in cattle and the first detection of MRSA harbouring mecC of domestic animal origin. MRSA in animal populations has implications as a potential reservoir with risk for spread to humans. Occurrence of MRSA among Swedish cattle appears still very limited.

• 出版日期2013-1-31