Trends in meningococcal disease in the United States, 1975-1980.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002487:Centers for Disease Control and Prevention, U.S.; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008589:Meningococcal Infections / Q000453:epidemiology*; D008875:Middle Aged; D009345:Neisseria meningitidis / Q000145:classification; D012703:Serotyping; D014481:United States