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Chinese Covid-19 Vaccine Far Less Effective Than Initially Touted in Brazil - The Wall Street Journal


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The New York Times
SOURCE: https://www.wsj.com/articles/chinas-sinovac-covid-19-vaccine-is-50-4-in-late-stage-brazil-trials-11610470581
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Summary

Results of Sinovac?s shot were almost 30 percentage points lower than previously announced, as concerns grow over study?s transparency

As said here by Samantha Pearson, Luciana Magalhaes, Chao Deng