Do people who received MMR in the 1960s need to have their dose repeated?
Not necessarily. Persons who have documentation of receiving LIVE measles vaccine in the 1960s do not need to be revaccinated. Persons who were vaccinated prior to 1968 with either inactivated (killed) measles vaccine or measles vaccine of unknown type should be revaccinated with at least one dose of live attenuated measles vaccine. This recommendation is intended to protect persons who may have received killed measles vaccine, which was available in 1963-1967 and was not effective.
Not necessarily. People who have documentation of receiving LIVE measles vaccine in the 1960s do not need to be revaccinated. People who were vaccinated prior to 1968 with either inactivated (killed) measles vaccine or measles vaccine of unknown type should be revaccinated with at least one dose of live attenuated measles vaccine. This recommendation is intended to protect those who may have received killed measles vaccine, which was available in 1963-1967 and was not effective.