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Transmission of MRSA CC398 strains between pig farms related by trade of animals

The molecular typing data confirm the findings of a previous risk-analysis study indicating that trading of colonised pigs is a vehicle for transmission of MRSA CC398.

12 December 2012
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Meticillin-resistant Staphylococcus aureus (MRSA) clonal complex (CC) 398 is a genetic lineage associated with livestock, especially pigs.

The authors investigated the role of pig trade in the transmission of MRSA CC398 between farms using pulsed-field gel electrophoresis (PFGE), a highly discriminatory method for strain typing. PFGE analysis of 58 MRSA isolates from a retrospective study in the Netherlands and a prospective study in Denmark provided molecular evidence that the strains present in five of the eight recipient farms were indistinguishable from those occurring in the corresponding supplying farm.

The molecular typing data confirm the findings of a previous risk-analysis study indicating that trading of colonised pigs is a vehicle for transmission of MRSA CC398.

C. Espinosa-Gongora, E. M. Broens, A. Moodley, J. P. Nielsen and L. Guardabassi. Transmission of MRSA CC398 strains between pig farms related by trade of animals. Veterinary Record 2012. vOL. 170 (22); 170:564 doi:10.1136/vr.100704

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