NFL testing new protective face masks with surgical or N95
U.S. eases COVID indoor mask guidelines for most of country
NFL and NBA lead new Covid outbreaks in sports
Here's how the NFL tackled the spread of COVID-19 among players
With COVID-19 cases rising, how safe are stadiums for the fans? - ESPN
New face mask guidance from the CDC recommends vaccinated people
2 masks are better than 1 to protect against the new and more
NFL Adds Mask Requirement, Increases Covid Testing - The New York
NFL says it would welcome Covid vaccine mandate for players
NFL will end mandatory COVID-19 testing for asymptomatic
Your Covid Game Plan: Are Stadiums Safe? - KFF Health News
Bay Area counties issue new mask mandates as COVID rises