How Worried Should You Be About Bird Flu?

 

A second strain of H5N1 avian flu was recently detected among dairy cows in Nevada, a sign that the outbreak could be harder to rein in than previously thought. 

A Nevada dairy worker exposed to infected cows also tested positive for the strain, federal health officials said.

The new variant of H5N1 bird flu is distinct from the strain previously spreading in U.S. cows, but it has been circulating broadly in wild birds in North America.

The variant previously detected in dairy herds is known as B3.13. Herds across 16 states have been infected, and this variant has been responsible for most human cases. 

The recent H5N1 infections among cattle and the dairy worker in Nevada were caused by the D1.1 genotype. 

That same variant in 2024 likely infected some 15 people in five states, the CDC said. Most cases in people have been mild, regardless of the variant. 

Wall Street Journal 11 February 2025

https://www.wsj.com/health/healthcare/bird-flu-h5n1-risks-explained-2025-a066af55

Bird Flu - Fågelvirus

https://englundmacro.blogspot.com/2025/02/bird-flu-fagelvirus.html

Tillbaka till Rolfs länktips 13 Februari 2025

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