A Decrease in Male Fertility from Pfizer Covid Vaccines - Study
A fully peer-reviewed study from July shows Covid vaccines can reduce fertility rates...
The European Journal of Andrology has published, at the Wiley Online Library, a fully peer-reviewed study from July that shows Covid vaccines can reduce fertility rates. The study was conducted by Israeli medical researchers Itai Gat, Michael Dviri, Matan Levi, Micha Baum, Ariel Horovitz, Ana Umansky, and Alon Kedem and shows a significant decrease in male fertility extending for at least three months after receiving the Covid vaccine with Pfizer’s mRNA shots.
According to the study, “a retrospective longitudinal multicenter comparison that reveals temporary sperm concentration reduction 3 months post BNT162b2 [Pfizer] vaccination and later recovery.” was conducted. The methodology used for the study shows a significant “temporary” decrease in several variables related to male fertility.
“37 SD [sperm donors] 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: T0 – pre-vaccination baseline control, which encompassed 1–2 initial samples per SD; T1, T2 and T3 – short, intermediate, and long terms evaluations, respectively. Each included 1–3 semen samples per donor provided 15–45, 75-120, and over 150 days after vaccination completion, respectively. The primary endpoints were semen parameters. Three statistical analyses were conducted: 1) generalized estimated equation model; 2) first sample and 3) samples’ mean of each donor per period were compared to T0 [pre-vaccination baseline control].”
The researchers note.
The study itself revealed also statistically drastic decreases in sperm concentration and total motile count.
“Repetitive measurements revealed −15.4% sperm concentration decrease on T2 (CI -25.5%–3.9%, p = 0.01) leading to total motile count 22.1% reduction (CI -35% – -6.6%, p = 0.007) compared to T0. Similarly, analysis of first semen sample only and samples’ mean per donor resulted in concentration and TMC [total motile count] reductions on T2 [intermediate dataset] compared to T0 – a median decline of 12 million/ml and 31 million motile spermatozoa, respectively (p = 0.02 and 0.002 respectively) on first sample evaluation and median decline of 9.5×106 and 27.3 million motile spermatozoa (p = 0.004 and 0.003, respectively) on samples’ mean examination. T3 evaluation demonstrated overall recovery. Semen volume and sperm motility were not impaired.”
The study concluded.