Meningitis in Chad.
D001428:Bacterial Vaccines; D002596:Chad / Q000453:epidemiology; D004196:Disease Outbreaks; D006801:Humans; D008585:Meningitis, Meningococcal / Q000453:epidemiology* / Q000517:prevention & control; D009345:Neisseria meningitidis / Q000276:immunology
D001428:Bacterial Vaccines