bild

Dr. Stefano Paglia, 50, receives the Pfizer-BioNTech COVID-19 vaccine, at the Civico hospital, in Codogno, Italy, Sunday, Dec. 27, 2020. European Union nations officially kicked off a coordinated effort Sunday to give COVID-19 vaccinations to some of the most vulnerable among their nearly 450 million people, marking a moment of hope in the continentâÄ™s battle against the worst public health crisis in a century. (Flavio Lo Scalzo/Pool via AP)