On Jun. 14, 2013, the U.S. Centers for Disease Control and Prevention’s (CDC) Advisory Committee on Immunization Practices (ACIP) recommended 2 doses of MMR vaccine routinely for children with the first dose administered at age 12 through 15 months and the second dose administered at age 4 through 6 years before school entry.

Two doses were recommended for adults at high risk for exposure and transmission (e.g., students attending colleges or other post-high school educational institutions, health-care personnel, and international travelers) and 1 dose for other adults aged ≥18 years. For prevention of rubella, 1 dose of MMR vaccine was recommended for persons aged ≥12 months.