National numbers, September 17

For the second week in a row, available data suggest that the current COVID-19 surge may be turning around, or at least heading for a plateau. But there’s still a lot of coronavirus going around—and this will likely remain true through the winter respiratory virus season.

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New data on BA.2.86 suggest the fall booster may work well

Since BA.2.86 emerged a couple of weeks ago, scientists around the world have been racing to evaluate this variant. Several teams posted data in the last week, and the news is promising: while BA.2.86 does have an advantage over past variants, the lab findings suggest that vaccines (including the upcoming boosters) and past infections provide protection against it.

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National numbers, August 13

All major COVID-19 metrics continue to increase in the U.S., as we deal with a late-summer surge. Wastewater surveillance suggests that current virus spread is on pace with the Delta surge in 2021, though other data sources are less reliable these days.

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National numbers, August 6

Over the last few weeks, the signals of a summer COVID-19 surge in the U.S. have grown steadily clearer. Viral levels in wastewater, test positivity, and hospitalizations are all climbing across the country.

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National numbers, July 23

COVID-19 data in the U.S. is showing increasingly clear signs of a summer surge, with infections rising across the country. However, thanks to the federal public health emergency’s end, we have less and less data to track this trend.

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COVID source shout-out: Cryptic lineage investigation in Ohio

Marc Johnson, a molecular virologist and wastewater surveillance expert at the University of Missouri, recently went viral on Twitter with a thread discussing his team’s investigation into a cryptic SARS-CoV-2 lineage in Ohio. I was glad to see the project get some attention, because I find Johnson’s research in this area fascinating and valuable for better understanding the links between coronavirus infection and chronic symptoms.

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National numbers, May 28

The COVID-19 plateau continues, with hospital admissions and viral levels in wastewater (the two main metrics I’m looking at these days) both trending slightly down at the national level. Newer Omicron variants are still on the rise, but don’t seem to be impacting transmission much yet.

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