How effective are these tunnels on a larger scale? Based on some research into already existing options, how effective are these tunnels for a. a large amount of people and a large footfall, and b. in terms of effectiveness to combat signs of the virus? Stretchstructures currently have such a decontamination tunnel / tent: https://stretchstructures.co.uk/collections/sale-clearance-items/products/decontamination-and-sanitation-tunnel Based on their video however, it seems like this is a one in and one out kind of option. Can these tents be modified to be longer and potentially have people just walking through as opposed to stopping and having one person at a time enter it? In terms of sanitizing from any virus that delegates would be carrying in via their clothing, this is probably effective (we would need further details from the WHO though and other experts). Maybe someone else has already worked with these tents and can shed a bit more light on this subject.