China's indigenous vaccines (Sinovac and Sinopharm) are based on inactivated virus technology. Describing them as "highly effective" is a bit of a stretch: the

China's indigenous vaccines (Sinovac and Sinopharm) are based on inactivated virus technology. Describing them as "highly effective" is a bit of a stretch: the WHO [1] put the effectiveness at about 50% against symptomatic infection, and a study in Hong Kong [2] concluded that three doses were required to gain a similar level of efficacy to the mRNA vaccines. The Chinese government has resisted importing Western mRNA vaccines [3], and their own mRNA efforts are not yet up to speed [4]. [1] https://www.who.int/news-room/feature-stories/detail/the-sinovac-covid-19-vaccine-what-you-need-to-know https://www.who.int/news-room/feature-stories/detail/the-sin... [2] https://archive.ph/TY9if https://archive.ph/TY9if [3] https://www.voanews.com/a/china-s-bet-on-homegrown-mrna-vaccines-holds-back-nation-/6587593.html https://www.voanews.com/a/china-s-bet-on-homegrown-mrna-vacc... [4] https://archive.ph/ifvbC https://archive.ph/ifvbC