Emergence of Multidrug-Resistant, Community-Associated, Methicillin-Resistant Staphylococcus aureus Clone USA300 in Men Who Have Sex with Men

摘要

Researchers have recently identified USA300, a clone of community-acquired, methicillin-resistant Staphylococcus aureus (MRSA) that is resistant to multiple antibiotics. Diep and colleagues demonstrate that the incidence of multidrug-resistant USA300 MRSA is highest in the areas of San Francisco where more male same-sex couples reside. The infection frequently manifests as an abscess or cellulitis in the buttocks, genitals, or perineum. Although multidrug-resistant USA300 MRSA infection might be sexually transmitted in this population, direct evidence on the mode of transmission is lacking.