In this Aug. 18, 2021, file photo, medical staff tend to a patient with coronavirus, on a COVID-19 ward inside the Willis-Knighton Medical Center in Shreveport, La. COVID-19 deaths and cases in the U.S. have climbed back to where they were over the winter, wiping out months of progress and potentially bolstering President Joe Biden’s case for sweeping new vaccination requirements. (AP Photo/Gerald Herbert, File)