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Flu season could be nasty this winter

By NPR.org  
   November 19, 2025

The U.S. may be entering another rough winter for flu, according to early data.  The first clue to what may be in store is what influenza did during the Southern Hemisphere's winter. That often predicts what's coming for the Northern Hemisphere. And now, parts of the Northern Hemisphere, such as the United Kingdom, are being hit hard. That often foreshadows what's in store for the U.S. Another clue is the Northern Hemisphere's dominant flu strain so far. It's an H3N2 flu virus, according to the CDC flu tracker. In addition, a new H3N2 variant recently evolved and has become the dominant strain in the U.S.

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