Disease information on avian influenza

Facts

Avian influenza, or bird flu, is a common term used to refer to the many types of influenza viruses that usually exclusively infect birds. Swine flu is a respiratory disease caused by influenza viruses that infect the respiratory tract of pigs.

Case definition

Case definition for zoonotic influenza, as published in the Official Journal of the European Union (Commission Implementing Decision (EU) 2018/945).

Factsheet on A(H3N8)

Factsheet on A(H5N1)

The information contained in this factsheet is intended for the purpose of general information and should not substitute individual expert advice and judgement of healthcare professionals.

Factsheet on A(H7N9)

The information contained in this fact sheet is intended for the purpose of general information and should not be used as a substitute for the individual expertise and judgement of healthcare professionals.

Questions and answers on avian influenza

What is avian influenza (bird flu)? Why are we concerned about bird flu outbreaks? What are the control measures in birds and animals? How do outbreaks of avian influenza spread?