Circulation of N. meningitidis in a child community.
D000293:Adolescent; D000328:Adult; D002648:Child; D002674:Child, Institutionalized; D002675:Child, Preschool; D003604:Czechoslovakia; D006294:Health Resorts; D006801:Humans; D007223:Infant; D009305:Nasopharynx / Q000382:microbiology*; D009345:Neisseria meningitidis / Q000302:isolation & purification*; D012621:Seasons