National numbers, January 8

Well, here we are: the winter COVID-19 surge. It may have happened later than some experts predicted, but the U.S. is clearly now experiencing an uptick in virus transmission as the latest, most contagious Omicron subvariants collide with holiday travel and gatherings.

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National numbers, December 18

After a significant post-Thanksgiving spike, COVID-19 transmission in the U.S. appears to be in a high plateau, according to trends in cases and wastewater. Official case counts stayed fairly steady this week compared to the week following the holiday, according to the CDC, while wastewater data from Biobot show coronavirus concentrations leveling out.

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