Previous SARS-CoV-2 infection associated with more adverse events following mRNA vaccination

By | April 26, 2021
The phase 3 trials of the Pfizer and Moderna COVID-19 vaccines did not include those with a known previous SARS-CoV-2 infection. Recent evidence indicates that mRNA vaccines may induce more adverse events in these individuals. In a recent study, 947 individuals, 265 of which have previously reported SARS-CoV-2 infection, were monitored post-vaccination for adverse events, finding that there could be a link between previous infection and greater incidence of these events.