Initial findings from RCTs of the two authorized COVID-19 vaccines (Pfizer-BioNTech and Moderna) reported that the vaccines are safe. However, subsequent reports show that the adverse and severe allergic reactions to these vaccines are higher than the general rates for vaccines.
Various regulatory agencies identify the risk for serious allergic reactions as low for the authorized vaccines, and they continue to monitor the vaccines’ safety closely.
Further investigations to make causal relationships with reported severe allergic reactions or deaths are needed.
Risks and benefits of receiving the vaccines should be discussed individually in vulnerable populations including pregnant or breast-feeding women, immunocompromised people, or frail elderly people.
Azizian, A; Groot, G; Mueller, M; Young, C. How safe are the Pfizer and Moderna vaccinations? 2021 Jan 24; Document no.: EOC011901 RR. In: COVID-19 Rapid Evidence Reviews [Internet]. SK: SK COVID Evidence Support Team, c2020. 30 p. (CEST rapid review report)