以色列有望达成群体免疫

那何不放任不管就可迅速达成快速感染?

老牌帝国们一开始不就是打算这么做的吗?所以一致说不用戴口罩 ;) 后来医护系统吃不消了,才有所管控
 
The CDC’s definition changed from “a product that stimulates a person’s immune system to produce immunity to a specific disease” to the current “a preparation that is used to stimulate the body’s immune response against diseases.”
 
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