| epidemic spread of a single clone of methicillin-resistant staphylococcus aureus among injection drug users in zurich, switzerland. | we describe an outbreak of methicillin-resistant staphylococcus aureus (mrsa) among injection drug users (idus). from august 1994 through december 1999, we registered 31 idus with mrsa infections (12 with soft-tissue infection, 7 with pneumonia [fatal in 1], 7 with endocarditis [fatal in 1], 2 with osteomyelitis, 2 with septic arthritis, and 1 with ulcerative tonsillitis), with a marked increase in the number of idus registered during 1998 and 1999. of 31 patients, 15 (48%) were infected with hu ... | 2001 | 11181121 |