Posted in Web New Brazil data shows only 50.4% efficacy for China’s … February 5, 2021 New Brazil data shows only 50.4% efficacy for China’s CoronaVac vaccine. Reuters. Published 13 Jan 2021, 1:21 am. Modified 13 Jan 2021, 2:29 am. A + A- https://www.malaysiakini.com/news/558726