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One vaccination Of MMR last for a lifetime.

One vaccination for most does last a lifetime, however this is not always the case.

People born in the late 60's early 70's needed a second in their late teens early 20's. There were outbreaks and those who get measles had received a shot when they were children but they did not get enough of the vaccine.

Also there are some people who do even after the shot still have no titer. A titer shows immunity or proof one has had an illness. The blood of those who cannot hold an immunity in some way cleans it out because it shows they never had the shot in the first place and only records from a doctor will show they actually had the shot.

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14y ago

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