Study finds the stronger the side effects, the longer lasting the vaccination
A total of eight of 296 subjects developed clinical breakthrough infection with SARS-CoV-2 PCR positivity over the 12-month observation period, with five noted amongst previously naïve vaccine recipients and three amongst subjects previously infected with SARS-CoV-2 . Amongst COVID-naïve vaccine recipients, the overall rate of breakthrough infections by month 12 was three of 108 mRNA-1273 recipients and two of 143 bnt162b2 recipients .
The most frequent adverse event noted after vaccination was pain at the injection site, representing 86% of AEs reported after first vaccination and 79% after second vaccination. The incidence of taking antipyretic or anti-inflammatory medication was 24% after 1st vaccination and increased to 63% after 2nd vaccination . Women were more likely to report medication use for symptoms after the 1st vaccination, as well as fatigue after the 2nd vaccination.
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