Introduction. Bird flu, or avian flu, is an infectious type of influenza that spreads among birds. In rare cases, it can affect humans. There are many different strains. WHO fact sheet on avian influenza: includes key facts, definition, clinical features, antiviral treatment, risk factors for human infection, human pandemic potential. The bird flu (also known as influenza A or the avian flu) primarily infects birds, but can pose health risks to people. Learn how to avoid this flu.
Bird flu Video