1 in 7 Who Get Pfizer Vaccine Will Have 'Systemic' Side ...
Apr 29, 2021 · Only 13.5% of people will suffer systemic side effects after getting Pfizer's coronavirus vaccine, a new study finds. These systemic symptoms include headache, fatigue and tenderness. Most side effects are mild and peak in the day after being vaccinated, and they only last for one to two days, according to the findings.
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