Bird Flu Update: US H5N1 News Now
[Host, energetic news tone] Welcome to Bird Flu Update: US H5N1 News Now, your three-minute briefing on the latest developments. I'm your host.
Since early 2024, the CDC reports 71 confirmed human H5 cases nationwide, with 41 linked to dairy herds, 24 to poultry farms, three to other animals, and three unknown. The most recent is the 71st case on November 15, 2025, verified by CDC as H5N5 on November 20, the first since February and the first global human H5N5. No human-to-human transmission detected, per WHO. Louisiana noted the first US H5 death.
In animals, USDA confirms ongoing HPAI detections in commercial and backyard flocks, with cases ebbing and flowing due to wild bird movement. Recent wild bird positives include Pennsylvania's Northampton County on December 11 and Minnesota's Dakota County on December 14, both EA H5, per USDA APHIS. California's CDFA reported H5N1 in a Placer County backyard flock on December 19 and H5N9 in a Merced County duck flock confirmed January 13.
CDC streamlined H5 updates July 7, 2025, folding them into routine flu reports; animal data now on USDA site. No new guidance changes past week, but FDA affirms pasteurization inactivates H5N1 in milk, with second retail survey August 2024 finding no viable virus in 167 samples across states like California, Texas, Idaho.
Research highlights: FDA funds thermal inactivation studies with Cornell and NIH partners, plus genome-edited chickens for resistance via University of Wisconsin. GISAID tracks US H5N1 clades like D1.1 in dairy and D1.3 in humans.
For you: Risk to public remains low; avoid raw milk, sick birds, unpasteurized dairy. CDC FluView week 51 shows rising flu hospitalizations at 6.2 per 100,000, but no new H5 spikes.
Compared to prior weeks: Human cases flat since February until November's outlier; animal detections steady, down from peak outbreaks, with US nearing containment per reports. Globally, 12 US H5 cases December 2024 to March 2025.
Stay vigilant, get flu shots. Thanks for tuning in—come back next week for more. This has been a Quiet Please production. For me, check out Quiet Please Dot A I.
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