In the last four years, Aviar influenza (avian flu) has devastated poultry farms in most of the main countries producing poultry and caused the greatest decrease in the world’s world population of wild birds in decades. It also affects numerous species of mammals and some humans. A PANZOOTHER, the animal equivalent of our pandemics, which has been possible thanks to the adaptation of the virus to wild birds.
The birds of the farm, mainly chickens, chickens, geese and ducks, have the worst part of the avian influenza. In part because the global population of poultry generates 70% of the world’s birds, but also due to collective sacrifice measures taken on the discovery of the first case of infection.
Until recent Ecology and evolution of nature in 2023.
But the emergence in 2021 or a new viral branch in the great family of Aviar H5N1 influenza changed the situation. The variants of this new clado 2.3.4.4b have spread throughout the world, moving from continent to the continent. First Asia, then Europe, North America, South America and finally the French lands of the South and Antarctica, north of Antarctica. The clado “has now adapted from birds from birds to wild birds, which explains the explosion of sustainable outbreaks in wild birds, even in remote areas without poultry,” analyzes Klaassen and Wille.
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