Chinese Covid-19 Vaccine Efficacy Is ‘Not High,’ Top Health Official Admits

April 12, 2021

(CNN) – The efficacy of Chinese Covid-19 vaccines is “not high” and authorities are weighing options to bolster protection — including mixing different shots, China’s top disease control official has said. “The protection rates of existing vaccines are not high,” Gao Fu, director of the Chinese Center for Disease Control and Prevention, told a conference in the southwestern city of Chengdu on Saturday. He listed two options to solve the problem: one is to increase the number of doses, or adjust the dosage or interval between shots; the other is to mix vaccines developed from different technologies.