新冠疫苗对防发病、防重症、防死亡的效果非常显著
http://www.gscdc.net/html/news/jiankangtishi/jiankangtishi-show-5336.html
详细介绍
http://www.gscdc.net/html/news/jiankangtishi/jiankangtishi-show-5336.html