Safety and Effectiveness of COVID-19 Vaccination during Pregnancy-
CDC released the first U.S. data on the safety of receiving an mRNA COVID-19 vaccine during pregnancy.
Evidence about the safety and effectiveness of COVID-19 vaccination during pregnancy, although limited, has been growing. These data suggest that the benefits of receiving a COVID-19 vaccine outweigh any known or potential risks of vaccination during pregnancy.
- No safety concerns were found in animal studies: Studies in animals receiving a Moderna, Pfizer-BioNTech, or Johnson & Johnson (J&J)/Janssen COVID-19 vaccine before or during pregnancy found no safety concerns in pregnant animals or their babies.
- No adverse pregnancy-related outcomes occurred in previous clinical trials that used the same vaccine platform as the J&J/Janssen COVID-19 vaccine: Vaccines that use the same viral vector have been given to pregnant people in all trimesters of pregnancy, including in a large-scale Ebola vaccination trial. No adverse pregnancy-related outcomes, including adverse outcomes affecting the baby, were associated with vaccination in these trials. Learn more about how viral vector vaccines work.
- COVID-19 vaccines do not cause infection, including in pregnant people or their babies: None of the COVID-19 vaccines contain the live virus that causes COVID-19 so a COVID-19 vaccine cannot make anyone sick with COVID-19, including pregnant people or their babies.
- Early data on the safety of receiving an mRNA COVID-19 vaccine (Moderna or Pfizer-BioNTech) during pregnancy are reassuring:
- CDC released the first U.S. data on the safety of receiving an mRNA COVID-19 vaccine during pregnancy. The report analyzed data from three safety monitoring systems in place to gather information about COVID-19 vaccination during pregnancy. These early data did not find any safety concerns for pregnant people who were vaccinated or their babies.1
- Another report looked at pregnant people enrolled in the v-safe pregnancy registry who were vaccinated before 20 weeks of pregnancy. Scientists did not find an increased risk for miscarriage among people who received an mRNA COVID-19 vaccine during pregnancy.2
- Many pregnancies reported in these safety monitoring systems are ongoing. CDC will continue to follow people vaccinated during all trimesters of pregnancy to better understand effects on pregnancy and babies.
- Early data suggest receiving an mRNA COVID-19 vaccine during pregnancy reduces the risk for infection: A recent study from Israel compared pregnant people who received an mRNA COVID-19 vaccine with those who did not. Scientists found that vaccination lowered the risk of infection from the virus that causes COVID-19.3
- Vaccination of pregnant people builds antibodies that might protect their baby: When pregnant people receive an mRNA COVID-19 vaccine during pregnancy, their bodies build antibodies against COVID-19, similar to non-pregnant people. Antibodies made after a pregnant person received an mRNA COVID-19 vaccine were found in umbilical cord blood. This means COVID-19 vaccination during pregnancy might help protect babies against COVID-19. More data are needed to determine how these antibodies, similar to those produced with other vaccines, may provide protection to the baby.4
Additional clinical trials that study the safety of COVID-19 vaccines and how well they work in pregnant people are underway or planned. Vaccine manufacturers are also collecting and reviewing data from people in the completed clinical trials who received a vaccine and became pregnant.
Vaccine Side Effects
Side effects can occur after receiving any of the available COVID-19 vaccines, especially after the second dose for vaccines that require two doses. Pregnant people have not reported different side effects from non-pregnant people after vaccination with mRNA COVID-19 vaccines (Moderna and Pfizer-BioNTech vaccines). If you experience fever following vaccination you should take acetaminophen (Tylenol®) because fever—for any reason—has been associated with adverse pregnancy outcomes. Learn more at What to Expect after Getting a COVID-19 Vaccine.
Although rare, some people have had allergic reactions after receiving a COVID-19 vaccine. Talk with your healthcare provider if you have a history of allergic reaction to any other vaccine or injectable therapy (intramuscular, intravenous, or subcutaneous).
Key considerations you can discuss with your healthcare provider include:
- The unknown risks of developing a severe allergic reaction
- The benefits of vaccination
If you have an allergic reaction after receiving a COVID-19 vaccine during pregnancy, you can receive treatment for it.
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One wonders why, with 16,000 covid vaccine deaths reported in VAERS, there have been no autopsy reports from the CDC. A sampling of 1% would seem indicated in order to establish a range with a decent p-value. And one would expect this to have been done early. One also wonders why physicians aren’t asking this question.
Now to the topic at hand. What percent of the v-safe registrants were 1st, 2nd, and 3rd trimester?
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VAERS is a passive reporting system. So all reported data may or may not reflect the true incidence. My guess is…If some analysis has been done, that is not available.
VAERS definitely has its problems, with both inaccurate and missing data. On a comparison basis, the count for covid vaccine deaths looks about 30x the deaths for all other vaccines. That is quite a strong signal, isn’t it? And then there are no pathology reports issued by the CDC. This ought to be concerning.
From the AMA we hear…crickets. And those who talk about this issue are called “conspiracy theorists” and “crackpots.”
What is the game? I don’t think it’s science.