Friday, December 5, 2025

Avian flu is a global concern

 
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.

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