What We Know — And What We Don’t — About 'Asymptomatic COVID-19' - WBUR 28-Jun-2020

What We Know — And What We Don’t — About 'Asymptomatic COVID-19' - WBUR

Much remains unclear about coronavirus cases that never involve symptoms, but they appear to represent at least 15% of cases, possibly far more, and to be potentially contagious, an infectious disease doctor writes.