title: Enhanced surveillance of meningococcal disease in five English regions: first quarter 1998.
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D002648:Child; D002675:Child, Preschool; D004739:England / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D007223:Infant; D008589:Meningococcal Infections / Q000175:diagnosis* / Q000453:epidemiology*; D009345:Neisseria meningitidis / Q000302:isolation & purification*; D016133:Polymerase Chain Reaction; D011159:Population Surveillance; D015996:Survival Rate; D014852:Wales / Q000453:epidemiology