Brazil trial finds efficacy of Sinovac vaccine at 50.4 percent Posted byEngineer DingJanuary 13, 2021January 13, 2021Posted inUncategorized brazil-trial-finds-efficacy-of-sinovac-vaccine-at-50Download [1] https://www.aljazeera.com/news/2021/1/13/brazil-trial-finds-efficacy-of-sinovac-vaccine-at-50-4-percent Share this:TwitterFacebookLike this:Like Loading... Related