In the same way that the SARS-CoV-2 virus spread quickly around the world, fake news about pandemics, protection and vaccines took over social networks, among the misinformation is that vaccines cause sterility.
Statements of this type have been circulating for months on social media. First, it was said that women should fear above all for their fertility, and the biological explanation was that the antibodies generated by the vaccine could not only attack the coronavirus, but were also directed against a protein that participates in the formation of the placenta. uterine.
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According to those who support the theory of sterility caused by coronavirus vaccines, the similarity in structure of the peak protein and syncytin-1 is the cause.
However, if this were correct, then “precisely, and above all, the disease that Covid-19 causes should also cause sterility”, explains Udo Markert, director of the Laboratory of Placental Physiology at the University Hospital of Jena, and President of European Society for Reproductive Immunology, together with his colleague Ekkerhard Schleußner, Director of the Maternity of the University of Jena and Vice President of the German Society of Perinatal Medicine.
“From the point of view of placental research and reproductive medicine, these allegations, however widely publicized, are totally unfounded,” the scientists write, and clearly recommend that women be vaccinated against the coronavirus.
Fear of male sterility
But it is not just women who feel insecure about possible vaccination because of such assumptions. In addition, news about the negative effects of vaccines on men’s reproductive capacity is spreading rapidly on social media.
An American study indicates, however, something else: researchers studied sperm from 45 individuals before and after vaccination with an mRNA preparation technology, and found no negative influence of the vaccine on the reproductive capacity of men.
“There were no effects of any kind on sperm in men,” said Daniel Nassau, a urologist and one of the study’s authors. The specialist is sure that if the test had been performed on a much larger number of men, the result would not have changed at all.
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