Background rates of adverse events of special interest for COVID-19 vaccine safety monitoring in the United States, 2019-2020

CONCLUSION: AESI background rates varied by database and demographics and fluctuated in March-December 2020, but most returned to pre-pandemic levels after May 2020. It is critical to standardize demographics and consider seasonal and other trends when comparing historical rates with post-vaccination AESI rates in the same database to evaluate COVID-19 vaccine safety.PMID:36404170 | DOI:10.1016/j.vaccine.2022.11.003
Source: Vaccine - Category: Allergy & Immunology Authors: Source Type: research