This year was the worst. And as our staff tried to figure out what to do for our last episode of 2020, co-host Latif Nasser thought, what if we stare straight into the darkness … and make a damn Christmas special about it. Latif begins with a story about Santa, and a back-room deal he made with the Trump administration to jump to the front of the vaccine line, a tale that travels from an absurd quid-pro-quo to a deep question: who really is an essential worker?  From there, we take a whistle-stop tour through the numbers that scientists say you need to know as you wind your way (or preferably, don’t wind your way) through our COVID-infested world. Producer Sarah Qari brings us her version of the Christmas classic nobody ever dreamt they’d want to hear: The Twelve Numbers of COVID. You can check out Martin Bazant’s COVID “calculator” here. This episode was reported by Latif Nasser and Sarah Qari, and was produced by Matt Kielty, Sarah Qari, and Pat Walters. Special thanks to Anna Weggel and Brant Miller, Catherine, Rohan, and Finn Munro, Noam Osband, Amber D’Souza, Chris Zangmeister, John Volckens, Joshua Santarpia, Laurel Bristow, Michael Mina,  Mohammad Sajadi, James V. Grimaldi, Stephanie Armour, Joshuah Bearman, Brendan Nyhan And for more on the proposed Santa vaccine deal, see Julie Wernau and her colleagues' reporting at the Wall Street Journal here. Original art for this episode by Zara Stasi. Check out her work at:  www.goodforthebees.com.  Support Radiolab by becoming a member today at Radiolab.org/donate.