Chinese Vaccine for COVID-19 Is Only 50% Effective


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News Snapshot: Chinese Vaccine Falls Short Scientists in Brazil downgraded the efficacy of a Chinese coronavirus vaccine to just 50%, much lower than previously announced. The news diminished hopes for a shot that could be easily distributed to help the developing world. — The New York Times (@nytimes) January 13, 2021 Health Editor’s Note: Despite the low efficacy of the Chinese produced COVID-19 vaccine (CoronaVac) many countries are ordering it and are preparing to use it. Is 50% (Brazilian drug trials say 50% versus 65.3% in Indonesian drug studies) effectiveness worth using this vaccine? I guess a 50% chance of...