The best way to prevent measles is through vaccination. Two doses of the measles, mumps rubella (MMR) vaccine or two doses of the measles, mumps, rubella, varicella (MMRV) vaccine provide lifelong protection against measles for most people. Additional doses are rarely recommended. There is also a standalone vaccine just against measles that is used in some countries but is not available in the U.S. Additional information about measles vaccinations is available from the CDC.