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When can I get a second MMR shot?


My daughter is 30 months old and had her first scheduled MMR at 12 months. Obviously she has not had her 2nd dose of the MMR since she can't get it until she's 4. So my question is, how worried should I be about her getting measles? How protected is she with just receiving 1 shot? Should I be worried?

Fortunately, your daughter is well protected. Ninety-five percent of children who receive a single dose of the MMR are immune to measles. That protection increases to 97 to 99% after children have two MMR vaccines. You are correct that the second dose of MMR is recommend at 4 to 6 years old. However, she could get her second dose now. The second dose of MMR can be given 4 weeks after the first dose. This is recommend for children traveling internationally or during an outbreak. If you live in or plan to travel to a high risk area, have your daughter get her second MMR now.


for more on measles see Measles Quick Facts

for more on MMR immunization

Early MMR vaccine

What are your thoughts in vaccinating earlier than 1 year old for measles given the current outbreak originating in California?
Currently, the American Academy of Pediatrics (AAP) recommends children get their first MMR (...more on Early MMR vaccine)



Written February 2015 by
Gregory Gordon MD, Orlando Pediatrician







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