Measles, Mumps, Rubella Vaccine (PRIORIX): Recommendations of the Advisory Committee on Immunization Practices — United States, 2022

What is already known about this topic?

Since 1978, M-M-R II has been the only measles, mumps, and rubella (MMR) combination vaccine used in the United States. In June 2022, the Food and Drug Administration licensed an additional MMR vaccine, PRIORIX.

What is added by this report?

The Advisory Committee on Immunization Practices recommends PRIORIX as an additional option to prevent MMR according to existing vaccine recommendations and off-label uses.

What are the implications for public health practice?

Both vaccines are interchangeable for all indications for which MMR vaccination is recommended. Availability from multiple manufacturers safeguards U.S. vaccine supply.