Adverse Events Following COVID-19 Vaccination in Young Japanese People: A Case-Control Study of the Risk of Systemic Adverse Events by A Questionnaire Survey

Abstract

development and activity of the immune system, accounting for differences in gender-related immune responses. 13 The ratio of naive B cells before vaccination and the ratio of activated CD8-positive T cells after vaccination are detected as immunological features that positively correlate with the increase in antibody titre after vaccination. 14 The results of this study showed that female participants had a higher incidence of adverse events.