MIAMI, FLORIDA - DECEMBER 15: A healthcare worker at the Jackson Health Systems receives a Pfizer-BioNtech Covid-19 vaccine from Susana Flores Villamil, RN from Jackson Health Systems, at the Jackson Memorial Hospital on December 15, 2020 in Miami, Florida. Jackson Memorial Hospital began the vaccination of frontline healthcare workers joining with hospital systems around the country as the COVID-19 vaccine is rolled out. (Photo by Joe Raedle/Getty Images)