title: Systemic Haemophilus influenzae infections in the era of ampicillin resistance.
mesh_terms: D000328:Adult; D000368:Aged; D000667:Ampicillin / Q000494:pharmacology*; D002675:Child, Preschool; D005260:Female; D006192:Haemophilus Infections / Q000453:epidemiology*; D006193:Haemophilus influenzae / Q000187:drug effects*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008583:Meningitis, Haemophilus / Q000188:drug therapy; D009329:Nebraska; D010403:Penicillin Resistance
chemical_list: D000667:Ampicillin