Switching from the August-age leprosy vaccination to the MMR vaccination can be more effective in controlling measles, mumps, and rubella virus infections in children, and the population will benefit more from the vaccination.
The MMR vaccine also protects against one additional disease, mumps, compared to the MMR vaccine. Prior to the change in measles vaccination strategy, infants and young children could only receive one dose of MMR vaccine, with no guarantee that a single dose would be sufficiently effective.
After the change in vaccination strategy, two doses of MMR vaccine can be given, thus effectively ensuring a secondary immune response for those who do not achieve immunity against the mumps virus during the first vaccination, which is more beneficial to children’s health.
Therefore, the change from the 8-month-old MMR vaccine to the MMR vaccine is more effective in preventing measles, mumps, and rubella.