Information about the latest developments around avian influenza A(H5N1) is available at Bird Flu Current Situation Summary. On This Page. Subtypes of Influenza A Viruses; Lineages of Influenza A Viruses ; Highly Pathogenic and Low Pathogenic Avian Influenza A Viruses; There are four types of influenza (flu) viruses: A, B, C and D. Wild aquatic birds, including gulls, terns, and shorebirds ...
Making a Candidate Vaccine Virus (CVV) for a Highly Pathogenic Avian Influenza (Bird Flu) Virus; Summary of status of development and availability of avian influenza A(H7N9) candidate vaccine viruses, WHO [198 KB, 3 pages] Update of WHO biosafety risk assessment and guidelines for the production and quality control of human influenza vaccines against avian influenza A(H7N9) virus [604 KB, 13 ...