Bird flu, also known as avian influenza, is a viral disease that primarily affects birds, but can also infect humans and other animals. The virus is highly contagious and can spread rapidly through domestic and wild bird populations. In rare cases, it can be transmitted from birds to humans, and in even rarer cases, it can be transmitted from human to human. The bird flu virus is a type of influenza virus that belongs to the family Orthomyxoviridae. There are several subtypes of bird flu viru...