| Summary: | The appearance of methicillin-resistant strains of <i>Staphylococcus aureus</i> (MRSA) in several animal species (including rabbits) has set off alarms for their capacity to act as reservoirs for this bacterium. This is especially important in wild animals given its epidemiological implications. The objectives of this study were to identify and characterize <i>S. aureus</i>, specifically MRSA, strains in wild lagomorph high-density areas. Ten hares and 353 wild rabbits from 14 towns with a high rabbit density in the Valencian region (eastern Spanish coast) were sampled. Swabs from the nasal cavity, ears, perineum and lesions (when present) were taken for microbiological studies. The detection of different genes and antibiotic susceptibility studies were also carried out. Of all the animals, 41.3% were positive for <i>S. aureus</i>, of which 63.3% were MRSA. Ears were the anatomical location with more <i>S. aureus</i> and MRSA strains. The more frequently identified MLST type was ST1945 (97.1%, 136/140). The <i>mec</i>A gene was found only in one sample. The rest (<i>n</i> = 139) carried the <i>mec</i>C gene and were included in CC130, except one. Penicillin resistance was detected in 28 <i>mec</i>-negative isolates and, in one case, bacitracin resistance. <i>mec</i>A isolate presented resistance to enrofloxacin and tetracycline, and 10 <i>mec</i>C isolates also showed bacitracin resistance. No MRSA isolate was positive for genes <i>chp</i>, <i>sea</i>, <i>tst</i> and PVL. Two ST1945 isolates contained IEC type E (comprising genes <i>scn</i> and <i>sak</i>). <i>mec</i>A-isolate was positive for <i>bla</i>Z. Of the 28 MSSA strains showing resistance to penicillin, 22 carried the <i>bla</i>Z gene. These surprising results highlight the marked presence of MRSA strains in wild rabbits in high-density areas.
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