Sixiu Wang

Nov 27, 2024 | onlinelibrary.wiley.com | Yan Zhu |Tao Chen |Chunying Lin |Sixiu Wang

1 Introduction Severe acute respiratory syndrome corona virus 2 (SARS-CoV-2) has caused the epidemic of coronavirus disease 2019 (COVID-19), and vaccination is an important way to prevent COVID-19. Chinese government launched COVID-19 vaccination on December 15, 2020, which is free for all [1]. As of January 30, 2023, more than 90 percent of the population had been fully vaccinated in China [2].