mRNA vaccines such as Pfizer, BioNTech or Moderna against Covid-19 have no negative impact sperm and male fertility, according to a new, small US scientific study.
According to findings published in the Journal of the American Medical Association (JAMA), researchers from the Department of Urology at the School of Medicine of the University of Miami University, in Florida, sperm analysis studies showed that there was no qualitative difference after mRNA vaccination.
The study took sperm samples from 45 men between the ages of 18 and 35 before they were injected with the mRNA vaccine and again 75 days after the vaccine was given.
“We have another study that debunks the myths of vaccinators about the ‘effects’ of vaccines on fertility,” said Elias Mossialos, Professor of Health Policy at the London School of Economics and Political Science (LSE).
Eight of the 45 men had oligospermia before the vaccine and seven of them showed an increase in sperm count, while one remained oligospermic. No man developed azoospermia (absence of sperm from the sperm) after the coronavirus vaccination.
“70 days is the complete life cycle of sperm and it is enough time to see if the vaccine affects sperm parameters,” said researcher Daniel Gonzalez. He added that, as the analyzes showed, the vaccination did not affect the volume of the sperm, the concentration of sperm, nor their motility.
The researchers expressed hope that the study would alleviate the unreasonable hesitations of some men about the potential effects of vaccines on their fertility.
Photo: Greek Prime Minister Kyriakos Mitsotaking receiving Pfizer-BioNTech’s vaccine