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FILE – Nurse manager Edgar Ramirez checks on IV fluids while talking to a COVID-19 patient at Providence Holy Cross Medical Center in Los Angeles, Dec. 13, 2021. More than a year after the vaccine was rolled out, new cases of COVID-19 in the U.S. have soared to the highest level on record at over 265,000 per day on average, a surge driven largely by the highly contagious omicron variant. (AP Photo/Jae C. Hong, File)