@RichardLWeiss @YouAreLobbyLud I've never considered surfaces ruled out, just less numerically dominant. Perhaps because you don't really have superspreaders from a surface, but through the air in a room full of people.
@RichardLWeiss @YouAreLobbyLud 我从来没有考虑过排除表面，只是在数量上不那么占优势。也许是因为你并没有真正从表面获得超级传播者，而是在一个满是人的房间里通过空气。