“Siegel has urged to install mats outside of  that pull particles off the bottom of people’s shoes, so that any viruses that settle on the floor don’t get tracked out and resuspended later. “I’d said these things feeling like maybe I was being overly cautious, secretly hoping that infectivity had no chance of being preserved,” says Siegel. “But this article provides further evidence that being more careful is warranted. Even if we don’t yet have anything definitive, there are still simple things we can do in the meantime just to be on the safe side.”
https://apple.news/A3DDYB8lKSlK3kMc4-bRt9g