Omicron vs. Delta COVID-19: How the New Variant Is Different Prevention.comScientists say it will take weeks to tell how dangerous omicron really is. Here's why WYFF GreenvilleUC San Diego scientists searching for new omicron variant in wastewater KPBSOmicron variant: Why scientists and the world reacted so quickly NBC NewsUC San Diego Scientists Testing Sewage for Signs of Omicron Variant NBC 7 San DiegoView Full Coverage on Google News