Arizona Air National Guard medic Will Smith, right, receives one of the first doses of the Pfizer-BioNTech vaccine for COVID-19 at the Arizona Department of Health Services State Laboratory from nurse Machrina Leach, Wednesday, December 16, 2020, in Phoenix. The Pfizer vaccine was almost 95 percent effective at preventing patients from contracting COVID-19 and caused no major side effects in a trial of nearly 44,000 people. (Photo by Ross D. Franklin/AP Photo)
