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. 2021 Apr 19;14:1389–1401. doi: 10.2147/IJGM.S310497

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© 2021 El-Shitany et al.

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The percentage absence (no symptoms) and presence (yes symptoms) of COVID-19 side effects reported by the study participants following the vaccine’s first, second, and both doses. Results were offered as frequency (percentage (%)).