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Brazilian Researchers Say Chinese-Made COVID-19 Vaccine is Effective – Voice of America

Brazilian researchers said Wednesday the coronavirus vaccine developed by Chinese drug maker Sinovac Biotech was found to be more than 50% effective in a late-stage…

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Brazilian researchers said Wednesday the coronavirus vaccine developed by Chinese drug maker Sinovac Biotech was found to be more than 50% effective in a late-stage clinical trial.  
But officials at the state-run research institute Butantan say they are withholding the results of the trial at Sinovacs request, raising issues once again about the lack of transparency involving the vaccines development.  
Tests of the Sinovac vaccine, dubbed CoronaVac, were halted last month after an adverse, serious…

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