https://bmcmedicine.biomedcentral.com/articles/10.1186/s12916-023-02861-3
Background The two inactivated SARS-CoV-2 vaccines, CoronaVac and BBIBP-CorV, have been widely used to control the COVID-19 pandemic. The influence of multiple factors on inactivated vaccine effectiveness (VE) during long-term use and against variants is not …
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