International journal of medical microbiology : IJMM
-
Int. J. Med. Microbiol. · Aug 2011
Staphylococcus aureus nasal carriage, virulence traits, antibiotic resistance mechanisms, and genetic lineages in healthy humans in Spain, with detection of CC398 and CC97 strains.
S. aureus nasal carriage was investigated in 278 healthy humans, determining the antibiotic resistance mechanisms, virulence traits, and genetic lineages of recovered isolates. Nasal samples were cultured in specific media for S. aureus and methicillin-resistant S. aureus (MRSA) recovery. S. aureus was detected in 53 of 278 nasal samples (19.1%): MRSA was found in one sample (0.4%) and methicillin-susceptible S. aureus (MSSA) in the remaining 52 samples. ⋯ Two MSSA presented the sequence-type ST398 [harboring erm(T) gene], and 2 additional isolates were typed as ST97. Interestingly, MSSA CC398 and CC97 isolates were detected. These clonal complexes are associated with food-producing animals.