Omicron, once a threat to the N.F.L. season, may largely spare the Super Bowl.

Less than two months ago, the Los Angeles Rams were going through what the quarterback Matthew Stafford called “that tough couple weeks.” As the Omicron variant of the coronavirus swept across the country, more than 30 Rams players tested positive during the last three weeks of December. At one point, nearly all of them, including seven starters, were on the reserve/Covid-19 list at the same time.

From Dec. 12 to Jan. 8, the N.F.L. said it recorded more than 1,200 positive tests among players and team staff around the league, an average of close to 10 per club per week. The Rams’ Week 15 game against Seattle was one of three that were postponed because of outbreaks. The Cincinnati Bengals, the Rams’ opponent in Super Bowl LVI, had about 20 players go on and off the Covid list in the last month of the regular season. It appeared likely the finish to the N.F.L. season would be disrupted by the coronavirus.

But with the Super Bowl just days away, what had seemed like a crisis is now a much smaller concern — perhaps in part because of changes in the league’s testing policy.

The league said it had not recorded a positive test since the divisional round games. (The N.F.L.’s weekly case numbers run through Feb. 5; neither the Bengals nor the Rams have announced any new cases this week.)

Some mainstay Super Bowl week events were canceled or postponed in response to Omicron. Players and coaches gave news media interviews over video conference, with the only in-person media availability scheduled for Friday.

California announced plans this week to lift its indoor mask mandate for vaccinated people, but that will not go into effect until Tuesday, two days after the game. To attend the game, fans over the age of 5 must show proof of Covid vaccination, or a negative P.C.R. test within 48 hours or a negative antigen test in the last 24 hours. All attendees over 2 will be required to wear a face covering during the game, except while actively eating or drinking.