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1. #Flu activity is at low levels now in most of the country, but the percentage of visits to health providers that are for flu-like illnesses is still limping along just above the epidemic threshold level for the 4th week in a row.
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1. A #flu 🧵:
Activity continued its sharp decline in the week ending Jan 21. It's barely over the epidemic threshold at this point nationally; in 6 regions it's below it. But for the fact that we've seen little #fluB activity, it would be tempting to guess flu season is over.
Activity continued its sharp decline in the week ending Jan 21. It's barely over the epidemic threshold at this point nationally; in 6 regions it's below it. But for the fact that we've seen little #fluB activity, it would be tempting to guess flu season is over.
2. But virtually all — 99.5% — of the #flu activity so far this season has been caused by flu A. There hasn't been much flu B since the first half of the 2019-20 season. In the Before Times, it was common to see flu B in late winter, early spring. This year? Ask me in June.
3. This #flu season took off like a bat outta hell in October, peaking Thanksgiving week. Activity reached a high apex, but the drop off has been swift. The image on the left shows #influenza-like illness the week ending Jan. 7. On the right, the week ending Jan. 21.
