Mrsa is also resistant to vancomycin and doxycycline Staph normally lives in our noses. Mrsa colonizes the skin and nasal passages of carriers without necessarily causing symptoms When skin integrity breaks down—through cuts, abrasions, or other lesions—the bacteria can invade and cause infection Since sexual activity involves prolonged close contact and often exposes microabrasions or mucous membranes, it's plausible that mrsa could be transmitted this way. Mrsa is carried on the skin and is in the dust in homes where infected people live
In other words, just sharing a house or bed with someone with mrsa is enough Sex itself usually isn't the issue.
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