关键词:
Age
Cardiovascular adverse events
COVID-19 vaccine
number of doses
obesity
timing of vaccine
vaccine safety
摘要:
Rationale Studies on determinants of cardiovascular adverse events (CVAEs) in ChAdOx1-nCoV-19 vaccine recipients are scarce. Methods This is a subgroup analysis of our published one-year prospective study (February 2021 to April 2022) on the safety of the ChAdOx1-nCoV-19 vaccine. Healthcare workers and the elderly were the core study participants (priority vaccine recipients) who were followed up telephonically for one year after vaccination. Patterns of CVAEs and their risk factors were analyzed. Results Out of 1650 enrolled participants, the data on CVAEs were available for 1525. Cardiac AEs and vascular AEs occurred in 1.4% and 1.8%, respectively. CVAEs were serious in 0.45% of participants. Obese individuals had 3.8- and 2-times higher odds of cardiac and vascular AEs, respectively. Individuals aged 40 years and above had 3 times higher odds of vascular AEs. Cardiac AEs were significantly more common after the first dose of the vaccine. No association was seen between CVAEs and COVID-19 before or after vaccination. The rates of persistent CVAEs were 2.4-3.1%, 1.1-1.3%, and 0.5-0.9% in the Vaccine After COVID (VAC) group, COVID After Vaccine (CAV) group, and Vaccine NO COVID (VNC) group, respectively. Conclusion The occurrence of CVAEs might be governed by the number of vaccine doses, age, obesity, and timing of the vaccine with respect to natural SARS-CoV-2 infection. While no causality can be established between the observed events and vaccination, individuals receiving any dose of vaccine after recovery from COVID-19 need extended monitoring for CVAEs. Larger studies including unvaccinated individuals are required to understand the predictors of CVAEs for the individualization of future vaccination policies.