Brazil says CoronaVac has an efficacy rate just over 50 percent, much lower than previously announced. More than 380 million doses have already been ordered.
Author: Sui-Lee Wee and Ernesto Londoño
Covid Vaccine Made by Chinese Company Sinovac Is Said to Be Effective
Sinovac Biotech has sold more than 300 million doses to the developing world, filling a gap left by Western countries.
Brazil Halts Trial of Chinese Coronavirus Vaccine, CoronaVac
The government offered little explanation as to why it had stopped testing a promising coronavirus shot; an institute involved in the trial said a participant’s death was unrelated to the vaccine.