We need someone with more knowledge of the subject to help us out here. Do those that are asymptomatic still test positive? After being infected how long does it take to show up as a positive test? If the virus can live on a metal surface for 2 to 3 days is it possible that someone could pick it up from a door handle 2 + 1/2 days after the infected person has been removed from the location?
I'm not aiming those questions at you in particular Stu, but more that those are the sort of questions that need answers to make it safe for football to restart.