On August 11, the Centers for Disease Control (CDC) recommended that pregnant people be vaccinated, based on the agency’s review of recent vaccine safety data. This new guidance follows a previous recommendation from the American College of Obstetricians and Gynecologists (ACOG).
Deborah Goldfrank, Head of General Gynecology at MSK, explains what to know about the safety and effectiveness of the vaccines for people who are pregnant, breast-feeding or planning to have children.
How do doctors know the vaccines are safe for pregnant women?
There is strong evidence that the vaccines are safe and effective for pregnant women. A recent study showed no increased risk for miscarriage for people who received the mRNA vaccine during the first 20 weeks of gestation.
A study in June 2021 in the New England Journal of Medicine found no safety concerns among more than 35,000 pregnant people who received the Pfizer-BioNTech COVID-19 vaccine (Comirnaty®) or Moderna COVID-19 vaccine.
As for the Johnson & Johnson/Janssen vaccine, ACOG issued a statement emphasizing that “all eligible persons, including pregnant and lactating individuals, receive a COVID-19 vaccine or vaccine series.” However, people should be aware of the very rare risk of a blood clotting disorder associated with the Johnson & Johnson vaccine and that the other FDA-authorized vaccines are available.Back to top
How is COVID-19 more dangerous for people who are pregnant?
According to the CDC, people who are pregnant and contract COVID-19 are at higher risk of serious complications, including being admitted to the ICU, needing a breathing tube, and even death. They may also be at higher risk of adverse pregnancy outcomes, such as premature birth.Back to top
Do the vaccines protect both pregnant women and their babies?
Emerging research shows pregnant women who are vaccinated not only protect themselves but also their babies.
Pregnant women who received the Pfizer-BioNTech and Moderna vaccines had COVID-19 antibodies in their umbilical cord blood and breast milk, according to the Journal of Obstetrics and Gynecology. Similar findings have been reported in other medical publications, too. While these studies are preliminary, they offer encouraging evidence that some of a mother’s immunity can be passed along to the baby before and after they are born.
This research also builds on a previous study that found pregnant women who have recovered from COVID-19 can pass along their immunity. The more recent study found more antibodies present in women who had been vaccinated against COVID-19 than in women who had recovered from COVID-19.
In addition, this research found the vaccine is equally effective for women who are pregnant compared to those who are not. Antibody levels following vaccination were the same in pregnant and lactating women compared to those who weren’t pregnant, the study says.
This study is currently under peer review.Back to top
Can COVID-19 vaccines cause infertility?
Despite alarming rumors spreading on social media, there is no data suggesting that COVID-19 vaccination impacts fertility. The approved COVID-19 vaccines do not contain live virus. They do not interact with or alter your DNA. According to fertility specialists, there is no evidence that vaccines increase the risk of infertility, first or second trimester miscarriages, stillbirth, or any birth defects.
Furthermore, because pregnant people are at greater risk of developing severe COVID-19, vaccination is important protection for people who are trying to get pregnant.
August 11, 2021