Dr. Joseph Varon, 58, the chief medical officer at United Memorial Medical Center (UMMC), and a team of healthcare workers perform CPR on a COVID-19 patient at UMMC, during the coronavirus disease (COVID-19) outbreak, in Houston, Texas, U.S., July 17, 2020. REUTERS/Callaghan O'Hare/File Photo TPX IMAGES OF THE DAY SEARCH "GLOBAL COVID-19" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.