Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Forest plots of sperm parameter comparison before and after the COVID-19 vaccine treatment. Forest plots of (a) total sperm motility, (b) semen volume, (c) sperm concentration, (d) total sperm count, and (e) sperm morphological change were compared accordingly. MD: mean difference; s.d.: standard deviation; CI: confidential interval; IV: inverse variance; df: degree of freedom.
