Abstract
Several methicillin-resistant Staphylococcus aureus (MRSA) lineages that carry a novel mecA homologue (mecC) have recently been described in livestock and humans. In Denmark, two independent human cases of mecC-MRSA infection have been linked to a livestock reservoir. We investigated the molecular epidemiology of the associated MRSA isolates using whole genome sequencing (WGS). Single nucleotide polymorphisms (SNP) were defined and compared to a reference genome to place the isolates into a phylogenetic context. Phylogenetic analysis revealed two distinct farm-specific clusters comprising isolates from the human case and their own livestock, whereas human and animal isolates from the same farm only differed by a small number of SNPs, which supports the likelihood of zoonotic transmission. Further analyses identified a number of genes and mutations that may be associated with host interaction and virulence. This study demonstrates that mecC-MRSA ST130 isolates are capable of transmission between animals and humans, and underscores the potential of WGS in epidemiological investigations and source tracking of bacterial infections. See accompanying article http://dx.doi.org/10.1002/emmm.201302622
Original language | English |
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Pages (from-to) | 509-515 |
Number of pages | 7 |
Journal | Embo Molecular Medicine |
Volume | 5 |
Issue number | 4 |
DOIs | |
Publication status | Published - Apr 2013 |
Keywords
- Cattle
- mecC
- MRSA
- Sheep
- Zoonosis
- Resistant Staphylococcus-Aureus
- Evolution
- Spread
- MECA(LGA251)
- Contributes
- Adaptation
- Virulence
- Carriage
- Adhesion
- Protein