Echovirus 11 infection and prophylactic antiserum.
D002675:Child, Preschool; D004196:Disease Outbreaks / Q000517:prevention & control; D004457:Echovirus Infections / Q000517:prevention & control*; D006801:Humans; D007116:Immunization, Passive; D007223:Infant; D007231:Infant, Newborn