Are the new COVID vaccines safe in pregnancy?


My email and Facebook messages are filled with the same question over and over again:

Are the new COVID vaccines safe for use in pregnancy?

I don’t know … and the truth is that no one knows.

The truth is that no one knows.

Yet the American College of Obstetrician Gynecologists (ACOG) is recommending the vaccine for pregnant persons.

They have issued the following guidance:

ACOG recommends that COVID-19 vaccines should not be withheld from pregnant individuals who meet criteria for vaccination based on ACIP-recommended priority groups.

My personal view is that ACOG has been too quick in issuing recommendations. They risk their credibility — and in a climate of active vaccine skepticism in the US — the credibility of all vaccine recommendations by getting out ahead of the data.

I’m not sure why they felt the need to make any recommendation at this time. The latest information in their own journal suggests a more cautious approach.

According to Coronavirus Disease 2019 (COVID-19) Vaccines and Pregnancy; What Obstetricians Need to Know:

Because pregnant persons were excluded from the initial phase 3 clinical trials of COVID-19 vaccines, limited data are available on their efficacy and safety during pregnancy. After developmental and reproductive toxicology studies are completed, some companies are expected to conduct clinical trials in pregnant persons. Until then, pregnant persons and their obstetricians will need to use available data to weigh the benefits and risks of COVID-19 vaccines.

There are a myriad of factors to be considered:

  • Data from animal studies (once developmental and reproductive toxicology studies become available)
  • Lack of data on pregnancies during vaccine clinical trials
  • Risks of vaccine reactogenicity, including fever; treatment with antipyretic medications (eg, acetaminophen) might reduce this risk
  • Timing of planned vaccination during pregnancy
  • Extensive evidence for safety of other vaccines during pregnancy
  • Risk of COVID-19 complications due to pregnancy (increased risk to pregnant person of severe disease and death)
  • Risk of COVID-19 complications due to underlying conditions (eg, diabetes, obesity, heart disease)
  • Risk of COVID-19 to fetus or newborn (intrauterine transmission is rare, but preterm birth appears to be increased)
  • Risk of exposure to SARS-CoV-2 and potential for mitigation with working from home, wearing masks, and physical distance

This is a uniquely difficult situation for three reasons: we don’t fully understand the disease in non-pregnant people; we don’t know whether the disease impacts the embryo or fetus; we have no experience at all with this new type of mRNA vaccine since there has never been another one like it.

Make no mistake: at the moment there is no evidence that the new vaccines are harmful to pregnant persons or their unborn babies.

The odds are high that the vaccine is safe and offers real, important protections during pregnancy. But good odds are no substitute for scientific data, and in my judgment, professional organizations should not make recommendations in the absence of data.

What does that mean for you if you are offered one of the new COVID vaccines during pregnancy?

It means — in my view — that the decision to accept or forgo the vaccine should be based on your specific circumstances, not based on a blanket recommendation.

Keep in mind that this is both a rare and a temporary situation. It’s a rare situation because the disease is relatively new, the vaccine was developed very quickly and we don’t have much data on the short and long term risks of either.

It’s temporary because going forward we will be gathering massive amounts of data on the disease, the vaccine and the impacts of both on pregnancy.

A year from now we will have a much better idea of whether pregnant people should take the vaccine. Until then, I believe we should honestly tell the public that we don’t know.

12 Responses to “Are the new COVID vaccines safe in pregnancy?”

  1. March 28, 2021 at 3:09 pm #

    Dr. T!

    What happened to your bustling site?

    Seems pretty dead to me. Well join me on Clubhouse tonight and we can chat all about it!


    Jenny Marie Hatch

  2. March 22, 2021 at 9:57 am #

    Hi Amy,

    I am starting a weekly chat at Clubhouse called Birth Chat. I would like to invite you to be my first guest on the chat. I am also going to invite Brandy Zadrozny to participate.

    It should be fun talking with two birth experts on the show. 7pm Mountain time. Just let me know if you need a Clubhouse invite. I have a couple extra.

    Jenny Hatch

  3. March 5, 2021 at 7:50 pm #

    Is there a vaccine for transphobia? Because you need it.

  4. March 1, 2021 at 1:37 am #

    The good news is that the CDC, and likely public health agencies in other countries, are starting to collect this information. I received my first vaccine dose 6 weeks ago as an essential worker, and as part of my weekly CDC checkin, I was asked whether I’ve learned that I’m pregnant in those last six weeks. So they’re gathering information.

    • demodocus
      March 1, 2021 at 10:10 am #

      Hooray for vaccination! (and always for useful gathering of data)

      My son’s district staff are in between vaccinations. They all got the first dose in early Feb and will get the next later this month. I don’t think it’s quite 6 weeks between, Why? shrugs. I am glad for them; teaching is always tough and this year’s been much more so.

  5. Amos Grunebaum
    February 7, 2021 at 1:09 pm #

    The question is, how comfortable are you by essentially discouraging high risk pregnant women from getting a vaccine that is life saving? Are you also comfortable being part of this crowd that discourages vaccination for seentially the same reasons you outlined:

    • Amy Tuteur, MD
      February 10, 2021 at 11:38 am #

      I’m VERY comfortable sharing scientific evidence about vaccines HONESTLY with women. You ought to be comfortable, too.

  6. fiftyfifty1
    January 23, 2021 at 1:56 pm #

    I don’t read it as an endorsement, I read it as neutral. Saying “the vaccine should not be withheld from pregnant individuals” means only that the choice should be that of the pregnant person, and not anybody else (such as her OB, insurance company, clinic etc.) Most pregnant women I know are declining it, but a few (high risk profession or high risk medical conditions) have chosen to have it. Her body, her choice.

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