S.F. gay community an epicenter for new strain of virulent staph
SAN FRANCISCO -- A new variety of staph bacteria, highly resistant to antibiotics and possibly transmitted by sexual contact, is spreading among gay men in San Francisco, Boston, New York and Los Angeles, researchers reported Monday.
The study released online by the journal Annals of Internal Medicine found the highest concentrations of infection by the drug-resistant bug in and around San Francisco's Castro district and among patients who visit health clinics that treat HIV infections in gay men in San Francisco and Boston.
The culprit is a form of MRSA, or methicillin-resistant Staphylococcus aureus, a bug that was once confined to hospitalized patients but, since the late 1990s, has been circulating outside medical settings, afflicting anyone from injection-drug users to elementary school students. A strain called USA300 has been a leading cause of MRSA infection in this decade, and an...