These numbers almost beggar belief. But here they are. According to a Monday CDC report, 73% of COVID infections in the US are now Omicron. Specifically, that was the percentage for the week ending December 18th. The rate of growth of new cases in the New York City metropolitan area has been mind-boggling. So extremely high percentages of Omicron here don’t surprise me at all. (I’ve heard informally that the rates here are roughly 90%.) But nationwide it almost beggars belief, even though we’ve seen comparable trajectories in the UK and Denmark.

Here’s the chart from the CDC …