title: Acute otitis media caused by ampicillin-resistant Haemophilus influenzae type B.
mesh_terms: D000208:Acute Disease; D000667:Ampicillin / Q000494:pharmacology*; D002675:Child, Preschool; D006192:Haemophilus Infections; D006193:Haemophilus influenzae / Q000187:drug effects*; D006801:Humans; D008297:Male; D010033:Otitis Media / Q000209:etiology*; D010403:Penicillin Resistance
chemical_list: D000667:Ampicillin