👉 H4N1 is a type of bird flu virus that causes severe illness in poultry, specifically hens and geese, commonly known as chickens. It originated from a strain that was first discovered in 2003 and has since spread to many other countries around the world. The term "h4n" stands for "highly pathogenic avian influenza H4N1," indicating the virus's ability to cause severe illness in humans, birds, or poultry.
