title: Outbreaks of meningococcal meningitis during Hajj: changing face of an old enemy.
authors.forename: M A
authors.initials: MA
authors.lastname: Khan
mesh_terms: D004196:Disease Outbreaks / Q000517:prevention & control*; D005260:Female; D006801:Humans; D017589:Immunization Programs; D015994:Incidence; D007514:Islam; D008297:Male; D008585:Meningitis, Meningococcal / Q000453:epidemiology*; D022401:Meningococcal Vaccines / Q000008:administration & dosage; D010154:Pakistan / Q000453:epidemiology; D012307:Risk Factors
chemical_list: D022401:Meningococcal Vaccines