Letter: Penicillin-resistant staphylococcus aureus.
D003428:Cross Infection / Q000382:microbiology*; D006801:Humans; D010403:Penicillin Resistance; D013019:South Africa; D013203:Staphylococcal Infections / Q000382:microbiology*; D013211:Staphylococcus aureus / Q000302:isolation & purification*