Flawed study of sperm donors raises question about vaccines and fertility

A recent study of 37 sperm donors found that the Pfizer COVID-19 vaccine caused a temporary decline in sperm count immediately after vaccination. The study was shared on a social media platform where it received over 17,000 engagements and 1,500 replies in three days. Some responses expressed concern that the study proves the vaccines impair sperm quality or may have a lasting effect on fertility. 

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The Public Health Communications Collaborative (PHCC) was formed in 2020 to coordinate and amplify public health messaging on COVID-19 and increase Americans’ confidence in guidance from the Centers for Disease Control and Prevention (CDC) and state and local public health officials.

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