MMRV vaccine

The MMRV vaccine is a suspension containing weakened versions of the viruses that cause measles, mumps, rubella, and varicella (chickenpox). Developed by Maurice Hilleman in 1971, it combines existing vaccines for these diseases to simplify vaccination schedules.1

In the United States, the MMRV vaccine is typically given in two doses: the first between 12 and 15 months of age, and the second between ages four and six. While generally safe, potential side effects can include mild fever or joint pain, with severe reactions like anaphylaxis being rare. Rubella, a component of the vaccine, can cause serious birth defects if a pregnant woman is infected. The MMR vaccine is required for school entry in most U.S. states.123