What does Iceland and Vo, Italy have in common for #COVID19?
A 43% rate of asymptomatic infectionshttps://t.co/IiqwkTQPNyhttps://t.co/4mrsdpQL4V
And the difference was random testing in Iceland, sequential in Vo (helping to rule out presymptomatic) pic.twitter.com/WD0PjX7MBD

— Eric Topol (@EricTopol) April 19, 2020