Huge study finds most COVID-19 vaccine side effects were mild for Pfizer-BioNTech and Moderna - USA TODAY

Headache, fatigue, fever, chills and pain were among the most common COVID-19 vaccine side effects for Pfizer and Moderna, according to the study.

A new study involving millions of participants has found most side effects from mRNA COVID-19 vaccines were mild and faded substantially after one day. The findings, published Monday in The Lancet I… [+3106 chars]

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