COVID-19: Top Chinese official admits efficacy of China's vaccines is low
China's top disease control official has admitted that the efficacy of the country's coronavirus vaccines is low - and mixing them is among the strategies being considered to boost their effectiveness.
Gao Fu, the director of the Chinese Center for Disease Control and Prevention, said efficacy rates needed improving, in the rare admission.
Giving people doses of different vaccines is one way to improve vaccines that "don't have very high rates of protection", he said.
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"Inoculation using vaccines of different technical lines is being considered," he added, during a conference in the Chinese city of Chengdu.