这个知识点有看头。粗浅的认识是疫苗让免疫系统处于亢奋状态，久而久之，免疫系统疲劳，失去敏感性。

来源: heysofie 于 2021-09-22 23:46:00 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.