Background: The development of covid-19 vaccinations represents a notable scientific
achievement. Nevertheless, concerns have been raised regarding their possible detrimental
impact on male fertility
Objective: To investigate the effect of covid-19 BNT162b2 (Pfizer) vaccine on semen
parameters among semen donors (SD).
Methods: 37 SD from three sperm banks that provided 220 samples, were included in that
retrospective longitudinal multicenter cohort study. BNT162b2 vaccination included two
doses, and vaccination completion was scheduled 7 days after the second dose. The study
included four phases….
“We can estimate over the last decade just how much money flowed from 3rd party payers, think pharmaceutical companies, back to NIH and its scientists.