流感消失?誰見過流感群體免疫?
流感消失?誰見過流感群體免疫?
• 流感病毒不隻限於人,在自然界中廣泛存在於動物、禽類,互相傳播並變異。新冠也有這種傾向,不可能完全消滅病毒,隻能限製。 -fuz- ♂ (0 bytes) () 08/14/2021 postreply 03:22:45
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