AdvertisementAt Houston Hospital, Head Of COVID-19 Unit Sees Some Staff Wary Of A VaccineDecember 16, 2020Steve InskeepHeidi GlennfacebookEmailDr. Joseph Varon prepares to enter the COVID-19 unit at Houston's United Memorial Medical Center in May. With him are nurses Tanna Ingraham (left) and Jerusha Harshman (right). (Los Angeles Times via Getty Images)
