Paratyphoid fever in England and Wales, 1978-82.
D000328:Adult; D002648:Child; D002675:Child, Preschool; D004739:England; D006801:Humans; D010284:Paratyphoid Fever / Q000453:epidemiology*; D012482:Salmonella paratyphi A; D012484:Salmonella paratyphi B; D014195:Travel; D014852:Wales