HealthGlobal issuesWhat's the percentage of asymptomatic COVID cases?To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoHealthGlobal issues10/01/2022October 1, 2022DW-Science reporter Derrick Williams explains there's no precise data on the number of asymptomatic COVID cases. One problem is the highly infectious Omicron variant - people might not even notice they have it, but can still pass it on to othershttps://p.dw.com/p/4HcCnAdvertisement