老人要打，小孩体质不弱的，感染一下也非坏事，据说每种病毒基本上都会终生免疫，老了可能受益。

来源: phobos 于 2025-02-27 07:26:00 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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