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Signage prior to the game between the Dallas Cowboys and the Minnesota Vikings at U.S. Bank Stadium. Photo: Adam Bettcher/Getty Images

The NFL found that transmission of COVID-19 occurred in less than 15 minutes of cumulative interaction between individuals, according to a new report from the Centers for Disease Control and Prevention.

The big picture: The protocols and resources for contact tracing and testing allowed the 32 teams to complete its regular season and the playoffs on time with only the Super Bowl remaining.

  • The league along with the NFL Players Association identified four factors when players and staff came in contact with each other: whether masks were in use, how well the room was ventilated, how long the interaction was and the physical distance between the two parties.

By the numbers: About 623,000 COVID-19 tests were performed on approximately 11,400 players and staff members and nearly 3% tested positive between Aug. 9 and Nov. 21.

  • Between Sept. 27 and Oct. 10, a total of 41 cases were identified among players and staff. Of those, 21 showed transmission within a single team, requiring closure of that team's facilities.
  • When infection rates climbed in November, the league intensified protocols, mandating high-risk interaction tracing and negative daily PCR testing, among other social rules.

Reality check: The CDC says intensive testing and contact tracing helps prevent the spread of COVID-19, but the model set by the football league could be too costly for other industries to copy.

What to watch: Only the Super Bowl remains, where Kansas City Chiefs and the Tampa Bay Buccaneers will play on Feb. 7 in Tampa with a limited crowd of about 22,000 fans.

  • The league announced Monday it will give away 7,500 tickets to vaccinated health care workers.

Go deeper

Updated 13 hours ago - Politics & Policy

Omicron dashboard

Illustration: Aïda Amer/Axios

  1. Health: FDA OKs antiviral drug remdesivir for non-hospitalized COVID patients — Walensky: CDC language "pivoting" on "fully vaccinated" — Pfizer and Moderna boosters overwhelmingly prevent Omicron hospitalizations, CDC finds.
  2. Vaccines: The case for Operation Warp Speed 2.0 — Teens and adults missed 37 million vaccinations during COVID — Team USA 100% vaccinated against COVID ahead of Beijing Olympics — Kids' COVID vaccination rates are particularly low in rural America — Annual COVID vaccine preferable to boosters, says Pfizer CEO.
  3. Politics: Arizona governor sues Biden administration over COVID funds tied to mandates — Biden concedes U.S. should have done more testing — Arizona says it "will not be intimidated" by Biden on anti-mask school policies.
  4. World: American Airlines flight to London forced to turn around over mask dispute — WHO: COVID health emergency could end this year — Greece imposes vaccine mandate for people 60 and older — Austria approves COVID vaccine mandate for adults — Beijing officials urge COVID-19 "emergency mode" before Winter Olympics.
  5. Variant tracker
Jan 30, 2021 - World

Germany to impose travel restrictions to curb spread of coronavirus variants

Border police officers check passports and COVID-19 tests at Frankfurt Airport. Photo: Thomas Lohnes via Getty Images

Germany announced Friday that it was imposing new travel restrictions in an effort to curb the spread of more contagious coronavirus variants.

Details: All non-German residents traveling from countries deemed "areas of variant concern," including the United Kingdom, South Africa, Portugal, Ireland, Brazil, Lesotho and Eswatini, will be banned from entering the country, even if they test negative for the coronavirus.

Most teachers are white. Most students aren't.

Expand chart
Data: U.S. Department of Education, National Center for Education Statistics; Chart: Baidi Wang/Axios

The nation's 6.6 million teacher workforce has grown more racially and ethnically diverse over the past three decades — but not nearly fast enough to keep pace with a student population that's nearing majority-minority in public schools, two new reports show.

Why it matters: The disparities are especially acute between Hispanic students and teachers, and in schools with 90% or higher non-white student populations.