COVID-19 and its impact on football - A Sports Law and Policy Centre and LawInSport Joint Survey - 4th Edition - LawInSport
NFL suspends all COVID protocols, cites 'encouraging trends'
Impact of the COVID-19 pandemic on sports - Wikipedia
Updates: 'Boys Optimistic About Barr, Zeke Injury
NFL suspends all COVID protocols, cites 'encouraging trends'
Changing the COVID rules will help the NFL on the field, but will it be safe for players? - The Boston Globe
2020 coronavirus outbreak coverage
Results from a Test-to-Release from Isolation Strategy Among Fully Vaccinated National Football League Players and Staff Members with COVID-19 — United States, December 14–19, 2021
NFL's new COVID-19 rules include changes to return-to-play protocols, return of intensive restrictions - ESPN
The NFL and NBA are changing their Covid-19 protocols as cases rise
Coronavirus Updates : NPR
NFL reexamining COVID-19 protocols after sudden wave of positive cases late in 2021 season