Smartphone contact tracing is really clever, promising, fulfilling a major unmet need. The @apple @google collaboration is terrific, but the idea came earlier from @MIT and Singapore; it would have been good to see that acknowledged https://www.bloomberg.com/opinion/articles/2020-04-10/apple-google-partnership-on-covid-fight-is-huge
https://twitter.com/EricTopol/status/1248427179630723072
Please note: All of these apps are OPT IN meant to supplement classic, laborious, physical contact tracing by people.
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