Enteric fever England and Wales 1981-90.
D003430:Cross-Sectional Studies; D004739:England / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D010284:Paratyphoid Fever / Q000453:epidemiology* / Q000635:transmission; D011159:Population Surveillance; D012482:Salmonella paratyphi A; D012484:Salmonella paratyphi B; D014195:Travel; D014435:Typhoid Fever / Q000453:epidemiology* / Q000635:transmission; D014852:Wales / Q000453:epidemiology