Epidemic of H. influenzae meningitis.
D002675:Child, Preschool; D004196:Disease Outbreaks / Q000453:epidemiology*; D006193:Haemophilus influenzae; D006801:Humans; D007223:Infant; D008583:Meningitis, Haemophilus / Q000453:epidemiology*; D009520:New Zealand