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KMID : 0191120210360210153
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Journal of Korean Medical Science
2021 Volume.36 No. 21 p.153 ~ p.153
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Adverse Reactions of the Second Dose of the BNT162b2 mRNA COVID-19 Vaccine in Healthcare Workers in Korea
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Lee Yun-Woo
Lim So-Yun
Lee Ji-Hyang
Lim Joon-Seo
Kim Mi-Seo
Kwon Seon-Hee
Joo Ji-Yeon
Kwak Sun-Hee
Kim Eun-Ok
Jung Ji-Won
Kwon Hyouk-Soo
Kim Tae-Bum
Kim Sung-Han
Bae Seong-Man
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Abstract
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We conducted a prospective, mobile-based survey on the self-reported adverse reactions in healthcare workers (HCWs) who received both doses of the BNT162b2 mRNA vaccine. Of the 342 HCWs who completed the two-dose vaccination, 265 (77.5%) responded to the survey at least once. Overall, the rates of adverse reactions were higher after the second dose compared with the first dose (89.1% vs. 80.1%, P = 0.006). The most common systemic reactions were muscle ache (69.1%), fatigue (65.7%), headache (48.7%), chills (44.2%), and fever (32.1%), and were notably more common after the second dose vaccine as well. We also noted a sex difference in which the frequency of adverse reactions after the second dose of the vaccine was significantly higher in females, which was not observed after the first dose. The rates of adverse reactions were lower in older age groups, and the rates and severities of the adverse reactions decreased during the 3-day period following vaccination.
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KEYWORD
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COVID-19, Vaccination, Adverse Reaction, BNT162b2
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