title: Association of serotypes 2A and 2B with meningococcal disease in Canada.
authors.forename: F E
authors.initials: FE
authors.lastname: Ashton
authors.forename: J A
authors.initials: JA
authors.lastname: Ryan
mesh_terms: D002170:Canada; D004196:Disease Outbreaks; D006801:Humans; D008589:Meningococcal Infections / Q000175:diagnosis / Q000453:epidemiology*; D009345:Neisseria meningitidis / Q000145:classification / Q000302:isolation & purification*; D012703:Serotyping