This is a nice sounding story but I don’t think it’s true. There were already publications from China in early February stressing that tracing the virus via sy

This is a nice sounding story but I don’t think it’s true. There were already publications from China in early February stressing that tracing the virus via symptomatic cases alone would not be enough to stop the spread. Here’s one from Feb 11. https://www.medrxiv.org/content/10.1101/2020.02.07.20021154v1 https://www.medrxiv.org/content/10.1101/2020.02.07.20021154v... China suppressed the virus not by IR scanning but by a well publicized system of travel restrictions and contact isolation/quarantine of anyone who had been in contact with a known case, regardless of whether they had a fever or other symptoms. All this was public knowledge in February and can be verified by reviewing preprints and news articles from then.