Map: Vax Before Travel, 10/23/2025
Headline: My Vet Candy, 12/4/2025
Global Spread and Impact
HPAI has been detected on every continent in 2025, including in remote locations such as Heard Island in the sub-Antarctic Indian Ocean, where infections have been reported in elephant seals. In Germany, migrating cranes have carried the virus into domestic flocks, prompting the culling of more than a million birds.
Migratory birds play a key role in transmission. As they travel south for the winter, they make stopovers that can introduce the virus to local wild and farmed birds. Recent studies show that mutations in the virus have made it easier for H5N1 to infect a broader range of avian species, increasing the potential for rapid spread.
Mitigation and Biosecurity
Experts emphasize that strong biosecurity measures on farms and strict surveillance of wild populations are critical to limiting transmission. Justin Bahl, an epidemiologist at the University of Georgia, noted that vigilant biosecurity is the most important tool in preventing further spread.
Active monitoring not only helps protect birds but also reduces the risk of viral mutations that could increase the potential for human infection. While 2025 has seen a small number of human cases, including a fatality in the U.S., public health officials maintain that the risk of a widespread human outbreak remains low.
Related posts:
December 2025
Around the world with avian flu. (12/1)
November 15-30, 2025
Bird flu spreads while Trump fiddles and Dept of Ag secretary Brooke Rollins poses with chickens. (11/16)
November 1-15, 2025
Avian flu taking a toll in Germany. (11/13)
Avian flu alert in Missouri. (11/7)
You're right if you think there's been a lot of birds killed by avian flu during the past 2 months. (11/1)
October 2025
Avian flu hits Iowa turkey flock. (10/7)
September 2025
Canadian Food Inspection Agency reports 4 cases of avian flu in Alberta but otherwise remains mum. (9/17)
April-August 2025

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