The introduction of measles/mumps/rubella vaccine.
D002648:Child; D002675:Child, Preschool; D004338:Drug Combinations / Q000009:adverse effects; D005260:Female; D006291:Health Policy; D006801:Humans; D007223:Infant; D008297:Male; D008458:Measles Vaccine / Q000009:adverse effects; D022542:Measles-Mumps-Rubella Vaccine; D009108:Mumps Vaccine / Q000009:adverse effects; D012411:Rubella Vaccine / Q000009:adverse effects; D006113:United Kingdom
D004338:Drug Combinations; D008458:Measles Vaccine; D022542:Measles-Mumps-Rubella Vaccine; D009108:Mumps Vaccine; D012411:Rubella Vaccine