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Immunization Schedule
In most states, proof of at least one MMR vaccination is required before a child enters school.

MMR vaccinations are given by injection in two doses. The first is administered at age 12 to 15 months; the second generally is given prior to school entry (age four to six years) but may be given at age 11 to 12 years. Some states require a second MMR at kindergarten entry.

Why Receive the Vaccine?
Measles, mumps, and rubella are infections that can lead to significant illness. More than 90
percent of children receiving MMR will be protected from the three diseases throughout their lives. The second MMR is recommended for adequate lifelong immunity.

Possible Risks
Serious problems are rare. Potential mild to moderate adverse effects, also rare, include rash, fever, and mild joint pain.

When to Delay or Avoid the Immunization

If your child is ill with anything more serious than a cold, immunization should be delayed.
If your child has an allergy to eggs or to the antibiotic neomycin that has required medical treatment.
If your child has received gamma globulin within the past three months.
If your child has an immune disorder caused by cancer, leukemia, or lymphoma; is taking prednisone, steroids, or immunosuppressive drugs; or is undergoing chemotherapy or radiation therapy.

How to Care for the Child After the Immunization
If a rash develops without other symptoms, no treatment is necessary and it should resolve
within several days. Acetaminophen or ibuprofen may be given for fever and pain.

When to Call the Pediatrician

If you aren't sure if the vaccine should be postponed or avoided.
If there are problems after the immunization.
 

This document is from the Centers for Disease Control and Prevention.
 

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