Answer
There is no evidence that COVID-19 vaccination reduces fertility. Non-clinical studies did not indicate harmful effects on fertility or reproduction.
Sources for this answer
- Comirnaty JN.1 3 micrograms/dose concentrate for dispersion for injection, 3-dose vial COVID-19 mRNA Vaccine — Current selected SmPCemc · Summary of Product Characteristics
- UK GovernmentUK Government · Reputable Web