Epidemic bacterial meningitis in Addis Ababa, 1972--1973.
D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D002648:Child; D005002:Ethiopia; D005260:Female; D006801:Humans; D008297:Male; D008585:Meningitis, Meningococcal / Q000453:epidemiology*; D008586:Meningitis, Pneumococcal / Q000453:epidemiology*