Delta Variant Causes Jump in U.S. COVID-19 Cases Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email In this July 1, 2021, file photo visitors wear masks as they walk in a shopping district, in the Hollywood section of Los Angeles. ( AP Photo/Marcio Jose Sanchez ) Hosted by Dr. Melissa Harris-Perry Produced by PRI and WNYC Studios