Joseph Biden actually said...
COVID-19 is a mass casualty. This team will help get the latest at the last 100 million COVID-19 vaccine, at least 100 million COVID vaccine shots, into the arms of the American people in the first 100 days. My first 100 days will end the COVID-19 virus. I can't promise that. But, but we did not get into this mess quickly. We're not going to get out of it quickly. It's going to take some time. But I'm absolutely convinced that in 100 days we can change the course of the disease and change life in America for the better.
Context
Biden outlines his plan to distribute COVID-19 vaccines and expresses confidence in changing the course of the pandemic in his first 100 days.
12/08/2020