April 17, 2020
6:36 a.m.
From The New York Times: *An Army of Virus Tracers Takes Shape in Massachusetts* /Asian countries have invested heavily in digital contact tracing, which uses technology to warn people when they have been exposed to the coronavirus. Massachusetts is using an old-fashioned means: people./ https://www.nytimes.com/2020/04/16/us/coronavirus-massachusetts-contact-trac...