Warning: Missing argument 3 for write(), called in /www/wwwroot/shijiebei05.com/incs/robot.php on line 68 and defined in /www/wwwroot/shijiebei05.com/incs/data.php on line 487 科兴灭活病毒COVID-19疫苗在巴西的3期临床试验PROFISCOV研究数据:间隔14天打第二针有效率50.7%,预防中症率83.7%,防护重症率100%。