Outbreak of meningococcal meningitis.
D002675:Child, Preschool; D002677:Chile / Q000453:epidemiology; D004196:Disease Outbreaks; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D008585:Meningitis, Meningococcal / Q000453:epidemiology* / Q000401:mortality