Chinese vaccine (SinoVac, CoronaVac) uses an inactivated whole SARS-CoV-2 virus. https://www.medicalnewstoday.com/articles/covid-19-how-do-inactivated-vaccines

Chinese vaccine (SinoVac, CoronaVac) uses an inactivated whole SARS-CoV-2 virus. https://www.medicalnewstoday.com/articles/covid-19-how-do-inactivated-vaccines-work https://www.medicalnewstoday.com/articles/covid-19-how-do-in... "... In an inactivated vaccine, the pathogen is killed or modified in such a way that it is unable to replicate. It cannot cause disease and is, therefore, suitable for those with a compromised immune system. The inactivation step usually involves heat, radiation, or chemicals to destroy the pathogen’s genetic material, which stops it from replicating. Inactivated vaccines can trigger a strong immune reaction, but it is usually not as strong as the reaction that live attenuated vaccines can produce. Due to this, a person may need booster shots to ensure ongoing protection. The COVID-19 vaccines that Sinovac, Sinopharm, and Bharat Biotech have developed are inactivated vaccines. ..."