NFL-NFLPA COVID-19 Intensive Protocol (2020 Season)
NFL used tracking tags to keep COVID from derailing season - Los Angeles Times
NFL's new COVID-19 rules include changes to return-to-play protocols, return of intensive restrictions - ESPN
COVID-19 Absences Affect NFL Outcomes - Johns Hopkins Coronavirus Resource Center
NFL increases COVID-19 protocols for all teams
COVID-19 positive tests lead to NFL, NBA, NHL postponements
NFL COVID-19 protocol changes, Week 15 postponed games, new testing and return-to-play rules - Can the NFL navigate the omicron variant? - ESPN
Updates on COVID-19 in Indiana: 228 cases, 16 deaths added to state's totals
Rising COVID-19 cases signal need for caution - University of Mississippi Medical Center
COVID-19 and real estate: How the coronavirus is impacting the AEC industry