The Pfizer / BioNTech vaccine does not affect sperm


(Reuters) – Pfizer Inc and BioNTech SE’s COVID-19 mRNA vaccine does not harm sperm, according to a study by Israeli researchers.

They collected sperm samples from 43 male volunteers before and about a month after the men were vaccinated. None of their sperm parameters (volume, concentration, or motility) had changed significantly after vaccination, the researchers reported on medRxiv prior to the peer review.

“These preliminary results are reassuring for the young male population that is being vaccinated worldwide,” the researchers said.

“Couples wishing to conceive should be vaccinated, as vaccination does not affect sperm,” while previous studies have shown that coronavirus infection negatively affects sperm, they added.

SOURCE: medRxiv, online May 3, 2021.

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