title: Meningococcal disease, serogroup W135, Burkina Faso. Preliminary report, 2002.
mesh_terms: D002050:Burkina Faso / Q000453:epidemiology; D006801:Humans; D008581:Meningitis / Q000453:epidemiology; D008589:Meningococcal Infections / Q000453:epidemiology*; D016036:Seroepidemiologic Studies