Investigation of Adverse Events Experienced by Healthcare Workers following Immunization with Homologous orHeterologous COVID-19 Booster Vaccinations.

The AEFI in all three booster groups are acceptable, and serious adverse events are rare. The risk of AEFI was higher in doctors, which may be related to the high stress during the COVID-19 epidemic. Support from government and non-governmental agencies is important for ensuring the physical and mental health of HCWs.