H5n1 2025. H5n1 bird flu is widespread in wild birds worldwide, and in 2024. In late 2021, hpai h5n1 spread from europe to north america causing sporadic infections among wild birds and poultry farms.


H5n1 2025

In late 2021, hpai h5n1 spread from europe to north america causing sporadic infections among wild birds and poultry farms. To the right is a colorized transmission electron micrograph of h5n1 virus particles (purple).

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