@drensber @berman_allen @sameo416 There is always a time and dose component. You might get 10% from the person next to you but only 1% from someone 5 rows back. Both could be the infector.
@drensber@berman\u allen@sameo416始终存在时间和剂量分量。你可能从旁边的人那里得到10%，但从后面5排的人那里只得到1%。两者都可能是感染者。