“I’ve read that the Pfizer vaccine causes female infertility by blocking a protein that is key in the formation of the placenta in mammals. Is there any shred of truth to this?”

Families Uncertainty and Misinformation Vaccines

A: No. There is no truth to this rumor. There is nothing in the human genome that is similar to the spike protein that each of the vaccines are targeting to prevent COVID-19. 💉First of all, rumors about similarity between the placenta proteins and spike protein just do not pass the sniff test. Remember: extraordinary