Bird flu , also known as avian influenza , is a viral infection that primarily affects birds but has the potential to impact humans and other animals. Over the years, outbreaks of bird flu have raised global concerns due to their ability to cause severe illness and economic disruption. The disease is caused by various strains of the influenza virus, some of which, like H5N1 and H7N9, have proven to be particularly dangerous. This article explores the origins of bird flu , how it spreads, its ... H5N1, or bird flu , poses a limited risk to humans but remains a serious threat. Learn how it spreads, its symptoms , and key precautions to prevent infection. Learn about the signs and symptoms of Bird Flu , a disease caused by infection from the Avian Influenza virus. Find out how to prevent and treat Bird Flu , and what to do if you have contact with infected birds or humans. Most human cases of bird flu , caused by avian influenza A (H5) virus, in the United States have been mild, so far, and most were in people who had known exposure to sick or infected animals. The severity of illness associated with bird flu has ranged from mild to severe, including death.
