Health
China’s coronavirus vaccines are leaping ahead – but face challenges as virus wanes – Nature.com
Companies could struggle to enrol enough trial participants, or gather enough data to convince regulatory agencies that the shots work.

Chinese companies have made several vaccines that are currently being trialled. Credit: Nicolas Asfouri/AFP/Getty
Chinese companies are at the forefront of global efforts to create a vaccine for the coronavirus, with more than half a dozen candidates in clinical development. Last week, Tianjin-based CanSino Biologics published results1 from an early-stage clinical trial showing that its vaccine is safe and can trigger an immune response.
Yet the companies could face difficulty as they try to …
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