Joe Flacco: I'm not vaccinated, I won't say why to avoid creating a distraction - NBC Sports
Super Bowl 2021 preview: All change at the big game as Covid prompts sponsor and venue rethinks - SportsPro
Dallas Cowboys won't require COVID-19 vaccinations, masks for fans this football season
Cowboys won't require proof of vaccination at AT&T Stadium, masks recommended for non-vaccinated
NFL opens to full stadiums as COVID-19 surges - The Sumter Item
Dallas Cowboys Official Site of the Dallas Cowboys
Damar Hamlin: Buffalo Bills safety showing 'remarkable improvement,' doctors say
Changing the COVID rules will help the NFL on the field, but will it be safe for players? - The Boston Globe
NFL looks like old self entering 3rd season in COVID-19 era
The AT&T Stadium will not require - KSAT 12 & KSAT.com
Covid-19 rules for fans at NFL stadiums: Masks, ticket 'pods,' bans or limits on tailgating
Opinion: Want football this fall? Don't be selfish. Wear a mask to slow COVID-19 spread
Q&A: Virologist Dr. Angela Rasmussen on Fans Returning to Games