A missed opportunity for Covid early detection and tracking, inexpensively, passively, at scalehttps://t.co/4cDxlps7AM systematic review of wearable sensors (smartwatch or fitness bands worn or owned by > 80 million Americans) @LancetDigitalH pic.twitter.com/sy1rArB5fE

— Eric Topol (@EricTopol) April 22, 2022