AdvertisementWhat we know about the symptoms — and the severity — of the omicron variantJanuary 06, 2022Michaeleen DoucleffWill StonefacebookEmailA commuter masks up for a bus ride in Liverpool, England. The omicron variant of the coronavirus has surged in the U.K. and is now dominant in the U.S. as well. There's now data indicating just how severe its symptoms might be. (AFP via Getty Images)