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Chinese Covid-19 vaccine far less effective than initially claimed in Brazil, sparking concerns

Published Jan 13 2021 at 11:29 AM GMT
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  • A leading Chinese Covid-19 vaccine developed by Sinovac Biotech was just 50.38% effective in late-stage trials in Brazil, significantly lower than earlier results showed, according to a statement published by the government of Sao Paulo Tuesday.




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  • Published Jan 13, 2021 11:29 AM GMT