如何区分无症状感染者和症状出现前的感染者？

来源: pickshell 于 2020-06-10 12:52:53 [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.

如何区分无症状感染者 和症状出现前的感染者？