BEIJING (China Daily/Asia News Network): China's two most widely used Covid-19 vaccines, developed by Sinovac and Sinopharm, were shown to be effective against the Delta variant of the coronavirus, a study based on real-world data in the country showed on Tuesday (Feb 1).
The two vaccines were 52% effective against Delta infection and 60% for symptomatic disease, researchers wrote in a peer-reviewed paper.
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