Doctors and researchers have been working around the clock to uncover the mysteries that remain about COVID-19. And while this past year has been marked by death and sadness, it’s also been a year of incredible progress. One Indiana scientist shares the most shocking things he's learned about COVID-19 in 2021.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.