National numbers, October 2

Official COVID-19 numbers continue to drop nationwide, with case counts down 13% and new hospital admissions down 6% this week compared to the prior week. Still, signals from wastewater suggest this is no time to let our guard down, especially if you live in the Northeast.

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BF.7, yet another Omicron subvariant of concern

Omicron BF.7, an offshoot of BA.5, is the latest subvariant to raise red flags among experts tracking COVID-19 in the U.S. This week, BF.7 passed BA.2.75, another worrying lineage, in the CDC’s prevalence estimates: the CDC found that it caused about 2.3% of new cases nationwide in the week ending September 24.

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National numbers, September 18

Officially-reported COVID-19 cases are still on the decline nationwide this week, as are newly hospitalized patients (a more reliable metric). About 4,400 people with COVID-19 were admitted to hospitals across the country, compared to over 6,000 a day in late July. But wastewater data are suggesting a potential new surge.

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