Low Efficacy of Chinese Shots Sows Concern on Global Rollout

Low Efficacy of Chinese Shots Sows Concern on Global Rollout Research released Sunday showed the rate for Sinovac Biotech Ltd.’s vaccine -- deployed in Indonesia and Brazil -- was just above 50%, barely meeting the minimum protection required for Covid vaccines by leading global drug regulators. The other Chinese shots have reported efficacy rates of between 66% to 79%. _____________________________________ If the South African mutation runs into a nation that has been vaccinated by China, it will not be good.