Reuters
China's vaccine developers stuck with unused mRNA COVID shots and idle manufacturing plants are pursuing new targets for the novel messenger RNA technology, but they face a tough path, crimped by a lack of revenue. Three Chinese companies - Walvax Biotechnology, CSPC Pharmaceutical Group and Stemirna Therapeutics - came up with mRNA vaccines that won limited emergency approvals in Asia. However, Walvax and CSPC are not currently manufacturing three of their China market shots, a China health official told Reuters.