Health care worker Demetra Ransom comforts a patient in the COVID-19 ward at United Memorial Medical Center in Houston, Texas. on Dec. 4. The U.S. has surpassed 20 million confirmed coronavirus cases.

TOPSHOT – Healthcare worker Demetra Ransom comforts a patient in the Covid-19 ward at United Memorial Medical Center in Houston, Texas on December 4, 2020. (Photo by Mark Felix / AFP) (Photo by MARK FELIX/AFP /AFP via Getty Images)