How COVID-19 Ended Flu Season Before It Started

The minuscule flu season raises some questions:

-How can there be so many cases of one respiratory illness and so few of another?
-Why isn’t there always a tidy match between the places with the least COVID-19 and the places with the least flu? https://t.co/0784q1wVkA

— FiveThirtyEight (@FiveThirtyEight) February 23, 2021