Penicillin-resistant strains of Neisseria meningitidis in Spain.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004352:Drug Resistance, Microbial; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009345:Neisseria meningitidis / Q000187:drug effects*; D010406:Penicillins / Q000494:pharmacology*; D013030:Spain
D010406:Penicillins