Prompt reporting of reactions to vaccines.
D002648:Child; D002675:Child, Preschool; D006801:Humans; D009108:Mumps Vaccine / Q000009:adverse effects; D014612:Vaccines / Q000009:adverse effects*; D014765:Viral Vaccines / Q000009:adverse effects
D009108:Mumps Vaccine; D014612:Vaccines; D014765:Viral Vaccines