The Centers for Disease Control and Prevention (CDC) has severely reduced its estimate of how many Omicron cases were diagnosed in the U.S. during Christmas week, down to 58.6 % from 73% of all cases.
The CDC also drastically lowered its estimate for the week before Christmas, saying that the Omicron variant accounted for just 22.5% of all cases. The agency had again estimated the number was 73%.
The new estimates mean the Delta variant may still be going strong in the U.S.
“Setting aside the question of how the initial estimate was so inaccurate, if CDC’s new estimate of #Omicron prevalence is precise then it suggests that a good portion of the current hospitalizations we’re seeing from Covid may still be driven by Delta infections,” former FDA chief Scott Gottlieb wrote on Twitter.