Avian flu has become endemic in wild birds and is spreading to poultry farms globally, leading to record losses in the poultry industry and putting the food supply at risk. The virus, which can infect wild and domestic birds, as well as mammals, is spreading year-round due to wild birds carrying high virus levels. The situation is expected to persist despite efforts to vaccinate or control the spread. The exact origin of the virus in wild birds is not confirmed, but it is more transmissible than previous strains. Farmers are implementing unconventional measures to protect poultry, and some experts suggest that climate change may be contributing to the global spread by altering bird habitats and migratory patterns.