FILE - In this July 6, 2020, file photo, blanket is pulled to cover the body of a patient after medical personnel were unable to to save her life inside the coronavirus unit at United Memorial Medical Center in Houston. The U.S. death toll from COVID-19 has topped 500,000 — a number so staggering that a top health researchers says it is hard to imagine an American who hasn't lost a relative or doesn't know someone who died. (AP Photo/David J. Phillip, File)