Watch CBS News

2021: How do coronavirus variants form

There's no magic bullet to stop coronavirus variants, says virologist Paul Duprex, and that's giving the virus a competitive edge. There are three new COVID-19 variants now spreading around the country. 60 Minutes reported on variants in 2021.
Aug 22, 2023 (01:35)
Videos
View CBS News In
CBS News App Open
Chrome Safari Continue