👉 H5N3 is a highly pathogenic avian influenza virus, first detected in chickens in 1968 and later observed in hens in poultry production facilities worldwide. This virus primarily infects birds but can spread to humans through contact with infected poultry or other animals. The H5 subtype is characterized by its ability to cause severe, potentially life-threatening disease in chickens, while the N3 subtype is associated with mild symptoms that are not lethal in humans. Human infections can be fatal,
