title: Is ampicillin-resistant Haemophilus influenzae becoming less common?
mesh_terms: D000667:Ampicillin / Q000494:pharmacology* / Q000627:therapeutic use; D002648:Child; D006193:Haemophilus influenzae / Q000187:drug effects*; D006801:Humans; D010403:Penicillin Resistance
chemical_list: D000667:Ampicillin