* Exception: If a student has previously received two doses of measles, one dose of mumps and one dose of rubella before January 1, 2010, the doses will be accepted as compliant to immunization requirements and 2 MMRs are not required.

Vaccine doses administered up to 4 days before the minimum interval or minimum age can be counted as valid for doses already administered. Exception: The minimum interval between doses of live vaccines (such as between the first and second dose of MMR) must be 28 days.