要麽你打過疫苗。顯然這現在不可能。要麽你感染過了但是症狀輕微或者無症狀。理論上抗體可以保護你,但是等病毒變異了就不好說了。
要麽你打過疫苗。顯然這現在不可能。要麽你感染過了但是症狀輕微或者無症狀。理論上抗體可以保護你,但是等病毒變異了就不好說了。
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