COMPARISON BETWEEN TWO STUDIES ON SPERM PARAMETERS BEFORE AND AFTER mRNA INOCULATIONS

Follow up questions that I think are important:

https://viralimmunologist.substack.com/p/breaking-news/comment/7338529

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Sperm Parameters Before and After COVID-19 mRNA Vaccination

https://pubmed.ncbi.nlm.nih.gov/34137808/

METHOD:[Semen sample after 2 to 7 days of abstinence, prior to

receiving the first vaccine dose and approximately 70 days after

the second.]

RESULTS:[There were no significant decreases in any sperm

parameter among this small cohort of healthy men]

OBJECTIONS: One cycle of Spermatogenesis is 74 days. Therefore you

would want data that covers at least 150 days so you can observed

a complete cycle.

Covid-19 Vaccination BNT162b2 Temporarily Impairs Semen

Concentration and Total Motile Count among Semen Donors

https://onlinelibrary.wiley.com/doi/10.1111/andr.13209

METHOD:[T0 - pre vaccination baseline control, which included 1-2

initial samples. Each of the three post-vaccination time frames-

T1, T2 and T3 - included 1-3 samples per donor supplied 15-45,

75-150 and over 150 days after vaccinated date, respectively.]

NOTE: One complete cycle of Spermatogenesis can be observed here

and additionally and very important, as the authors pointed out

[The wide heterogeneity and variations between semen samples over

time necessitates repetitive measurements per donor by diverse

statistical approaches]. This could not be done in the previous

study.

RESULTS:[No significant change was demonstrated between T1 and T0.

The only significant differences were found specifically on sperm

concentration and TMC on T2]

CONCLUSION: The previous study could not observed this change,

that occurred during the 75-120 days after vaccination (T2)

period.