Wikimedia
Wikipedia: Avian Influenza (Bird Flu)
Wikipedia provides a detailed, up-to-date overview of avian influenza that focuses on the infection, how it is spread to humans as well as its impact on humans, prevention and treatment, and more.
Centers for Disease Control and Prevention
Centers for Disease Control: Avian Influenza (Bird Flu)
The primary access point for CDC-produced information about avian flu: key facts, current outbreaks, questions and answers, virus spread, eradication efforts and plans, travel advisories, and similar resources.
Centers for Disease Control and Prevention
Centers for Disease Control: Key Facts About Avian Influenza (Bird Flu) and Avian Influenza a (H5 N1) Virus
This site provides general information about avian influenza (bird flu) and one type of bird flu (H5N1). Information is also provided on human health risks, treatment, and vaccination.
Centers for Disease Control and Prevention
Centers for Disease Control: Avian Influenza Infection in Humans
This concise site provides a listing of confirmed instances of avian influenza infecting humans since 1997.