title: Ampicillin-resistant Listeria monocytogenes meningitis in a previously healthy 14-year-old athlete.
mesh_terms: D000293:Adolescent; D000667:Ampicillin / Q000627:therapeutic use*; D006801:Humans; D008088:Listeriosis / Q000188:drug therapy*; D008297:Male; D008581:Meningitis / Q000188:drug therapy*; D010403:Penicillin Resistance
chemical_list: D000667:Ampicillin