title: Meningitis in Chad, Niger and Nigeria: 2009 epidemic season.
mesh_terms: D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D002596:Chad / Q000453:epidemiology; D004196:Disease Outbreaks; D006801:Humans; D032541:Mass Vaccination; D008585:Meningitis, Meningococcal / Q000188:drug therapy / Q000453:epidemiology* / Q000517:prevention & control; D022401:Meningococcal Vaccines / Q000627:therapeutic use; D009345:Neisseria meningitidis / Q000276:immunology; D009548:Niger / Q000453:epidemiology; D009549:Nigeria / Q000453:epidemiology; D011159:Population Surveillance; D012621:Seasons
chemical_list: D000900:Anti-Bacterial Agents; D022401:Meningococcal Vaccines