Figure 1. Cases of skin infections among schoolchildren, Switzerland, September 1999–November 2001. I: Nasal mupirocin twice a day, chlorhexidine showers once a day for carriers of penicillin-resistant Staphylococcus aureus and their family members (5 days); alcoholic hand rubs in the classroom and at home (3–4 weeks). II: Repeated measures (5 days) in those still found to be carriers and in their family members. III: Repeated measures limited to the two relapsing children and their family members.