There are many myths and misconceptions about vaccination against COVID-19; the most frequent statements are that they can cause infertility in women and threaten miscarriage in pregnancy. However, there is no research to suggest that the COVID-19 vaccine can build up in the ovaries with a risk of becoming infertile. There is also no confirmation that miscarriages are more common in women who have been vaccinated for COVID-19 during pregnancy.
- Vaccine opponents often argue that the preparations can cause infertility and miscarriage in pregnant women
- However, there are no studies that would confirm this thesis
- Doctors recommend that pregnant women get vaccinated against COVID-19
- You can find more such stories on the TvoiLokony home page
COVID-19 vaccination and infertility
The BBC News says the misunderstanding on the matter stems from a misreading of animal studies submitted by Pfizer, the manufacturer of one of the mRNA vaccines.
Rats received a dose higher than humans (1,3 times). However, these experiments showed that only 0,1 percent. The total dose of the vaccine is excreted in the ovaries of female rodents within 48 hours. The greatest amount of this preparation was found at the site of its administration, i.e. in the upper part of the arm. After an hour, it was 53 percent. of this measure, and after 48 hours – 25 percent. The next place with the highest concentration was the liver, where 48% were detected after 16 hours. the vaccine you received. This is not surprising as the liver helps to remove waste products from the blood. The same is true of drugs and many other substances.
Ovarian fat levels increase slightly after an mRNA vaccine is given in the ovaries within 48 hours. This may be because the mRNA that triggers the body’s immune response is administered in a fatty envelope (so that it is not attacked by immune cells and destroyed before it triggers immunity against COVID-19). However, there is no evidence that the mRNA itself, i.e. a fragment of the genetic material of the virus coding only one protein of it, penetrates the ovaries (after its production, the body produces an immune reaction).
COVID-19 vaccination and miscarriage
There is also no indication that the COVID-19 vaccine may cause miscarriage in pregnant women. BBC News admits that such suspicions have been reported to the UK authority dealing with the side effects of medicines. However, this does not mean that there is a causal relationship between the two.
Official data show that pregnant women who are vaccinated against COVID-19 have the same number of miscarriages as the general population, i.e. 12,5%. In mid-June 2021, he wrote this “New England Journal of Medicine” in the article “Preliminary Finding of mRNA Covid-19 Vaccine Safety in Pregnant Persons”. It concluded that there are no concerns as yet about the safety of mRNA vaccines in pregnant women.
The monitoring of side effects in the UK and many other countries is extremely reliable. This is how it was discovered that the vectored AstraZeneki vaccine is extremely rare at increasing the risk of thrombosis in women.
There is no indication that the COVID-19 vaccine may trigger an immune response against the fetal placenta. Such suspicions were made by Michael Yeadon, and it was supposed to result from the fact that the coronavirus protein encoded by the mRNA was supposed to be similar to isyncitin-1, a protein used in the placenta. The immune system would also attack placental cells by producing antibodies to the coronavirus.
However, this is contradicted by the research of the American specialist Dr. Randy Morris. He studied patients undergoing in vitro artificial insemination procedures. The observations included 143 women, some of whom were vaccinated against COVID-19 or had had the disease before. All of them were pregnant to a similar extent and were given birth.
Those who say the vaccine increases the risk of miscarriage do not explain why this is not the case for women who recover and then become pregnant. What is the difference between anti-SARS-CoV-2 antibodies produced by infection and those produced by a vaccine? Dr. Randy Morris asks.
The US Centers for Disease Control and Prevention (CDC) issued a recommendation several days ago that pregnant women should be vaccinated against COVID-19. There are no contraindications to this in previous or recent studies, as stated in the justification of the decision. It was noted, however, that in the event of infection with the SARS-CoV-2 virus during pregnancy, the risk of severe COVID-19, early delivery and even miscarriage is greater.
A genetic test to check the risk of miscarriage is available from Medonet Market
Author: Zbigniew Wojtasiński / PAP
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