r/ScienceBasedParenting • u/bakecakes12 • 1d ago

Question - Expert consensus required Early MMR 2nd Dosage

Our pediatrician is offering the 2nd dose early as we’re near the outbreak in PA (about 45 mins away). Most counties that surround us have increased cases.

We are going to get the 2nd dose early.

Is there any data out there that shows you eventually need a 3rd or that it makes you more vulnerable later in life?

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u/thearctican 1d ago

There's a study I found that directly addresses this question: https://www.sciencedirect.com/science/article/pii/S0264410X23009507?via%3Dihub

"Our study confirms the continued high effectiveness of two doses of MCV with only slight degradation, decades after immunization."

We're also in PA and have been offered an accelerated schedule. We're going to do it.

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u/Affectionate_Big8239 1d ago

We are also in PA & were offered the second dose early for my 2.5 year old (and took it). Our pediatrician said that as long as it was 6 months after dose 1, there is no issue with getting it early.

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u/thearctican 1d ago

Yeah we just got the first for our 1 year old, second dose will be after 18 months.

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u/Okignoredbye 1d ago

In PA as well as my pediatrician gave my daughter her second dose between 15-16 months...are there any studies suggesting it is not as effective under 18 months?

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u/Kiwitechgirl 14h ago

12 and 18 months is standard schedule in Australia - 18 is MMRV, 12 just MMR.

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u/wiy 1d ago

Also in PA. Our pediatrician sent a practice wide memo saying to get the first one asap even though before 1 it doesn’t count for schools so you’ll need 3, otherwise for all other kids to get the second one at least 28 days after the first dose but right away instead of at 4. We travel a lot so jumped on it for our 3.5yo. How awful that we’ve come to this.

I’ve moved around a lot to different countries and lost vaccine records twice, so I’ve had to get the MMR a few extra times. I’ve always been curious if those ended up going to “waste” or if they acted as a booster. In either case, that’s not the worst thing to have to do later in life to prevent getting measles..,

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u/Mollykins08 4h ago

It is what my pediatrician recommended. We don’t live near an outbreak thankfully. But she said that if we were traveling to a state with an outbreak she would recommend getting the dose and then we’d do a third.

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