7 doctors weighed in:

Why is the MMR vaccine given after 12 months? We're going abroad and they recommend I give it to my 6 months old, but I am scared of the side effects.

7 doctors weighed in
Dr. Keegan Duchicela
Family Medicine
4 doctors agree

In brief: If going abroad..

The reason why the cdc recommended it at 6mo if going abroad is because in europe (france especially) there has been a massive outbreak of measles (parents aren't vaccinating their kids).
Your 6mo old is going to be on a plane with international travelers who will be sick, coughing, and spreading germs. It is very contagious. You do not want your baby to get measles.

In brief: If going abroad..

The reason why the cdc recommended it at 6mo if going abroad is because in europe (france especially) there has been a massive outbreak of measles (parents aren't vaccinating their kids).
Your 6mo old is going to be on a plane with international travelers who will be sick, coughing, and spreading germs. It is very contagious. You do not want your baby to get measles.
Dr. Keegan Duchicela
Dr. Keegan Duchicela
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7 comments
Dr. Keegan Duchicela
Just as an aside - we had a patient in clinic this past week who tested positive for measles. She was traveling from Taiwan here to the west coast, not immunized, and had been on domestic flights from LA to San Fran - sick the entire time - before seeing us in clinic. Measles is out there, get protected!
Dr. Keegan Duchicela
great question. The timing of mmr in particular was determined by two things - 1)how long did protective antibodies remain from mom in baby 2)when was babys immune system mature enough to make a good amount of antibodies to vaccine. With measles, the studies showed that about 1/2 of babies lose their antibodies from mom by 1mo. At 6mo, immunity is gone in 99% of babies. However...
Dr. James Ferguson
Pediatrics

In brief: Potency

The timing of vaccines is based on when they can give the most long term benefit to the population.
The basic issue with the MMR is thought to be the lingering influence of maternally passed (pregnancy) immunoglobulins which can diminish the ability of that vaccine to give lifelong benefit.When given at 6m, a repeat after a year is recommended.

In brief: Potency

The timing of vaccines is based on when they can give the most long term benefit to the population.
The basic issue with the MMR is thought to be the lingering influence of maternally passed (pregnancy) immunoglobulins which can diminish the ability of that vaccine to give lifelong benefit.When given at 6m, a repeat after a year is recommended.
Dr. James Ferguson
Dr. James Ferguson
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Dr. Mark Diamond
Pediatrics
1 doctor agrees

In brief: Better protection

Research on the vaccine has shown that it is not as effective if given under a year of age.
But if there is a serious risk of exposure, such as in europe, it is better to vaccinate, because the vaccine may work.The risks of fever and/or rash are insignificant compared to the risk of the disease.

In brief: Better protection

Research on the vaccine has shown that it is not as effective if given under a year of age.
But if there is a serious risk of exposure, such as in europe, it is better to vaccinate, because the vaccine may work.The risks of fever and/or rash are insignificant compared to the risk of the disease.
Dr. Mark Diamond
Dr. Mark Diamond
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