- Dollar General Will Pay Workers to Get a Covid-19 Vaccine The Wall Street Journal
- 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
- Covid Vaccine: Promises Made Vs. Where We Stand | NBC News NOW NBC News
- Brazil researchers now say China’s Sinovac vaccine is 50% effective — lower than announced earlier CNBC
- View Full Coverage on Google News
