Safety Monitoring of COVID Vaccines and Perception of Post-vaccination Side-Effects: Preliminary Findings From The First Month of Routine Monitoring in a Hospital Vaccination Setting of China

Abstract Objectives: This study aims to explore the occurrence of post-vaccination side-effects from COVID-19 vaccines and its affecting factors in a hospital vaccination setting of China.Results: A total of 811 vaccinees aged 17 to 58 years, who finished the full package of two doses in February 2021, have been recruited at the second vaccination uptake. Among all, there have been 66 participants who reported one or more mild side effects, while none of them developed severe cases. Those with history of immune deficiency were more likely to report side effect(s). Although with several concerns, most participants showed willingness to get vaccinated (98.8%) with relevant high proportions of perceived safety (99.5%) and effectiveness (97.3%).