要么你打过疫苗。显然这现在不可能。要么你感染过了但是症状轻微或者无症状。理论上抗体可以保护你,但是等病毒变异了就不好说了。
要么你打过疫苗。显然这现在不可能。要么你感染过了但是症状轻微或者无症状。理论上抗体可以保护你,但是等病毒变异了就不好说了。
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