Meningococcal disease in England and Wales.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D004739:England / Q000453:epidemiology; D006801:Humans; D007223:Infant; D008589:Meningococcal Infections / Q000453:epidemiology* / Q000382:microbiology; D009345:Neisseria meningitidis / Q000145:classification*; D014852:Wales / Q000453:epidemiology