WILMINGTON, Del. - President-elect Joe Biden publicly received a second dose of the Pfizer-BioNTech COVID-19 vaccine, part of an ongoing effort to instill confidence in its effectiveness as the pandemic worsens.Biden received his first shot on Dec.
21 at a hospital not far from his Delaware home. His wife, Jill Biden, was also vaccinated. The U.S. Centers for Disease Control and Prevention recommends the Pfizer shots be administered 21 days apart.Vice President-elect Kamala Harris received the first dose of a vaccine developed by Moderna on Dec.