他体内有抗体，3-6个月有保护反而更安全。

来源: emplid 于 2020-08-05 03:46:51 [博客] [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.