COVID-19 vaccine rollout has been messy and chaotic. What’s going on?

Empty vials of Pfizer-BioNTech COVID-19 vaccine are seen at a vaccination center at the University of Nevada, Las Vegas on January 22nd.

If the introduction of the COVID-19 vaccine seems messy and incomprehensible, with numbers that don’t add up and assignments that don’t make sense, you are not alone. Even people who study this for a living are at a loss. “Neither of us know what’s going on,” said Dr. Amesh Adalja, a senior scientist at the … Read more