title: Meningococcal disease in England and Wales 1978-79--a change in the serotype pattern.
mesh_terms: D000942:Antigens, Bacterial / Q000032:analysis; D004739:England; D006801:Humans; D008589:Meningococcal Infections / Q000453:epidemiology / Q000382:microbiology*; D009345:Neisseria meningitidis / Q000145:classification* / Q000302:isolation & purification; D012703:Serotyping; D014852:Wales
chemical_list: D000942:Antigens, Bacterial