Animal Health: Avian Influenza: Background, resources, news, and breaking information from the United Nations Food and Agriculture Organization.
Avian Flu (Bird Flu): A guide to bird flu and its symptoms from BBC Health.
Avian Influenza: Information on bird flu from Australia's Department of Health and Ageing.
Avian Influenza: Find disease and control strategies by Intervet. Includes details on preparation and outbreaks.
Avian Influenza (Bird Flu): Implications for Human Disease: Overview of avian influenza (bird flu) and analysis of the developing threat to humans.
BBC Health news: Avian flu: BBC questions and answers on avian flu, and whether it could spread between humans.
Bird Flu: With a frequently updated list of web news on avian influenza.
Bird flu (avian influenza) - MayoClinic.com: Overview of the virus, its effects on birds and humans, and the possibility of global pandemic.
Bird Flu - Cornell Lab of Ornithology: Learn about the impact of avian flu on birds and humans with advice for bird watchers.
Bird Flu - US Department of State: News on the disease from the US government.
Bird Flu Monitor: Weblog with comment on and links to news and media stories.
CDC: Avian Influenza (Bird Flu): Facts about previous flu pandemics, and key facts about bird flu and the avian influenza A (H5N1) virus.
CIDRAP: News on avian influenza from the Center for Infectious Disease Research and Policy at the University of Minnesota.
CNN.com - Bird flu: What you need to know: Questions and answers about Avian Influenza.
Flu Shots and the Bird Flu: Explains why the normal vaccination will not protect against this specific virus.
Guardian Unlimited: Special Report: Bird Flu: Ongoing news coverage of the H5N1 virus and the possibility of a human pandemic. Includes Flash slideshow showing how a pandemic might start.
International Society for Infectious Diseases: With frequent updates on the incidence of, and plans to detect cases of, avian flu.
MedlinePlus: Bird Flu: News and links.
Medscape: Avian Flu in Humans May Be Common, but Mild, After Exposure to Sick Poultry: Report on a study by Dr. Anna Thorson showing that self-reported mild cases of flu-like illnesses were highly correlated with exposure to sick poultry. (No serological analysis.) [Free registration required.]
Nature: Bird Flu: Events relating to, and science about, bird flu, presented by the science magazine Nature.
NBII Wildlife Disease Information Node: Monitoring and reporting system to provide data on wildlife diseases, mortality events, and other critical related information.
Reuters AlertNet - Bird Flu: Provides news, information, and analysis on the bird-flu emergency.
SciDev.Net: Questions, answers, and opinions from the Science and Development Network, which provides information on science- and technology-related issues that impact developing countries.
Singapore Government Bird Flu: News and facts about bird flu from the Singapore Government.
WHO: Avian Influenza: Fact sheet about the disease and its risk to humans.
World Health Organization: Communicable Disease Surveillance and Response: includes updated counts of human incidence of Avian flu, and updates of the state of medical knowledge.