News ‘Stealth omicron’ slightly more infectious, but no worse than original, Walensky says: COVID updates February 4, 2022February 4, 2022 Lindsay Schnell, USA TODAY Comments Off on ‘Stealth omicron’ slightly more infectious, but no worse than original, Walensky says: COVID updates Public health experts have said the stealth omicron may slow down current drop in infections across the U.S., but likely won't stop it. Live updates.