CDC Cuts Recommended Quarantine Time as US COVID Infections Reach an All-Time High 2021-12-29

Download
Although no longer required outside, a sign advises visitors to wear masks at the Denver Zoo in Denver. Some states embraced the new CDC guidance, but others have not. (May 13, 2021)
( David Zalubowski, File / AP Photo )
GBH PRX WNYC Studios