Echovirus surveillance.
D004457:Echovirus Infections / Q000453:epidemiology* / Q000382:microbiology; D004739:England / Q000453:epidemiology; D029822:Enterovirus B, Human / Q000145:classification*; D006801:Humans; D011159:Population Surveillance; D012703:Serotyping; D014852:Wales / Q000453:epidemiology