FILE – A middle school principal walks the empty halls of his school as he speaks with one of his teachers to get an update on her COVID-19 symptoms, Friday, Aug., 20, 2021, in Wrightsville, Ga. On Monday, Dec. 27, 2021, U.S. health officials cut isolation restrictions for Americans who catch the coronavirus from 10 to five days, and also shortened the time that close contacts need to quarantine. (AP Photo/Stephen B. Morton, File)