LEDs placed inside COVID-19 vaccine containers shine next to a Christmas tree made of empty vaccine containers at a vaccination center in Bucharest, Romania, Monday, Dec. 6, 2021. Staff at one the largest COVID-19 vaccination centers in Bucharest, Romania, have built a three meter tall Christmas tree out of 19 thousand empty vaccine COVID-19 containers, some with colored LEDs placed inside them, they collected since March 2021 for the project. (AP Photo/Andreea Alexandru)