But in a sub group of volunteers who received ah half dose, followed by a folders, the effectiveness rose to 90% In the last few weeks, Pfizer and Biotech and Madonna published their results, which said that there to dose vaccines were 95% effective.
但在一個子組的志願者收到啊半劑量,其次是一個文件夾,有效性上升到 90%在過去的幾個星期裡,輝瑞和生物技術和麥當勞公佈了他們的結果,其中說有到劑量疫苗是 95%的有效。