2021 Buffalo Bills schedule: Complete match-up information for 2021 NFL season
NFL discussed cancellations due to COVID-19 outbreaks on teams: reports
NFL reexamining COVID-19 protocols after sudden wave of positive cases late in 2021 season
How the NFL navigated COVID-19 this season - 959,860 tests, $100 million and zero cancellations - ESPN
NFL informs clubs that COVID-19 outbreaks among unvaccinated players could lead to forfeited games
Why NFL is playing on a Tuesday for just the fourth time since 1948: How rare it is, how to watch, who's out
NFL Suspends All COVID-19 Protocols for the 2022 Season
NFL reduces testing for asymptomatic vaccinated players
COVID-19 pandemic in the United States - Wikipedia
The Blitz: How Wayland Baptist dealt with a COVID outbreak during Week 2 of the 2023 season
Covid-19 outbreaks wreak havoc on NFL schedule with three games moved
Three NFL games moved due to COVID-19 outbreaks
Major sports and entertainment events canceled, rescheduled due to rising COVID-19 cases - ABC News