Ampicillin-resistant Haemophilus influenzae in Johannesburg.
D000667:Ampicillin / Q000627:therapeutic use*; D006192:Haemophilus Infections / Q000188:drug therapy*; D006193:Haemophilus influenzae; D006801:Humans; D010403:Penicillin Resistance
D000667:Ampicillin