MRSA, a penicillin-resistant strain of S. aureus common in hospitals, is showing up in gyms, day care centers, and other group settings. The disease is spread by close skin-to-skin contact, crowding, and sharing contaminated items.

[Read](http://news.nationalgeographic.com/news/2006/04/0425_060425_staph.html?source=rss) (National Geographic)