Medical staff members work in the nursing station at the United Memorial Medical Centre in Houston, Texas. Numbers on the wall indicate the days since the hospital opened its Covid-19 intensive care unit. Getty Images/AFP
Medical staff members work in the nursing station at the United Memorial Medical Centre in Houston, Texas. Numbers on the wall indicate the days since the hospital opened its Covid-19 intensive care uShow more

US daily Covid-19 deaths rise by more than 2,400 on eve of Thanksgiving