The virus passes from the young to the old is 6 times more

本帖于 2020-03-11 10:55:00 时间, 由普通用户 -worldance- 编辑

than from the old to the young.  Also, most young infected have no/mild symptoms.

So, on college campuses, profs are more vulnerable.

请您先登陆,再发跟帖!