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A 36-year-old member asked:

What is in measles vaccine and how is it delivered?

1 doctor answer5 doctors weighed in
Dr. Bryan Levey
Pediatrics 27 years experience
Measles virus: Measles vaccine is made from measles virus, but it's altered so that it causes no disease in most, but slight disease in a few (low grade fever and/or rash for 1-2 days). It is delivered via a needle into the tissue that lies under the skin. It stimulates the immune system to make antibodies against the virus, but without having to have the full-blown illness, with all the illness's risk, first.
Dr. Marc Grella
Dr. Marc Grella commented
Pediatrics 28 years experience
In the US the measles vaccine is part of the measles/mumps/rubella (MMR) vaccine; all 3 are live attenuated (weakened) viruses. It is administered as a subcutaneous ("subQ") injection at 12-18 months and 4-6 years old (and only to older children if they have not had the primary series).
Dec 21, 2014

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