News Snapshot:
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. Live COVID updates from across the UK and around the world Image: Gao Fu at a press conference earlier this year "Inoculation using vaccines of...