Latrice Davis, a nurse at Roseland Community Hospital, receives the COVID-19 vaccine on December 18, 2020 in Chicago, Illinois. The hospital began distributing the vaccine to its staff yesterday. (Photo by Scott Olson/Getty Images)

Scott Olson
Latrice Davis, a nurse at Roseland Community Hospital, receives the COVID-19 vaccine on December 18, 2020 in Chicago, Illinois.

Along with the controversy over use of vaccines with connections to abortion-derived tissues, other key questions include the right to refuse vaccines, mandatory vaccination, and distributing the vaccines fairly.