In a previous study, Ramasamy found the coronavirus in men’s testes, and for some men, it temporarily lowered their sperm counts. But Ramasamy says because both the Pfizer and Moderna vaccines don’t use the actual virus, they likely won’t impact male fertility.
“People think that the vaccine actually has the virus in it. But the Pfizer and the Moderna vaccines that have emergency use authorization from the FDA, are just the mRNA vaccines that make a protein that the COVID virus expresses. So it is not the full virus and it does not biologically appear to actually bind to the testes and affect testicular function,” he said.
The Johnson and Johnson vaccine could be a different story.
“The J&J vaccine is the actual virus. And so now all of the concerns about the potential virus binding to the testes and impacting sperm count remains, and probably remains more with the J&J vaccine compared to the Pfizer and the Moderna vaccines,” Ramasamy said.
截止时间：2021-07-03 00:00:00
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