- Brazil downgrades efficacy of Chinese COVID-19 vaccine | TheHill The Hill
- Chinese Covid-19 vaccine far less effective than initially claimed in Brazil, sparking concerns CNN
- Sinovac: Brazil results show Chinese vaccine 50.4% effective BBC News
- Indonesia’s president receives a Chinese-made vaccine that produced disappointing trial results. The New York Times
- Turkish health authority gives go-ahead for emergency use of Chinese Sinovac vaccine Washington Post
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