The share of people testing positive in New York City doubled in three days this week, and one of the mayor's top health experts says it's an indication of omicron evading immunity in a way no other variant had before.

https://www.nbcnewyork.com/news/coronavirus/this-is-a-whole-new-animal-breakthrough-infections-rattle-nyc-amid-omicron-surge/3456543/

--
NFL postpones three Week 15 games due to COVID-19 surge
https://www.nfl.com/news/nfl-covid-week-15-game-postponement

--
It's not clear yet if Omicron is a milder variant. But its rapid spread is certain to overwhelm hospitals, experts say
https://www.cnn.com/2021/12/18/health/us-coronavirus-saturday/index.html