Influenza is an acute viral infection that spreads easily from person to person in any age group. In addition to seasonal epidemics, influenza pandemics can occur when a new influenza virus subtype emerges or when an animal influenza virus begins to spread among humans.

WHO/Europe influenza control and other respiratory pathogens

Top story

Influenza and other respiratory pathogens programme contributes to first issue of Public Health Panorama

The first issue of Public Health Panorama has 2 papers prepared by the programme on influenza and other respiratory pathogens.

Read more

Flu News Europe

Middle East respiratory syndrome coronavirus (MERS-CoV)

This novel coronavirus was first reported to WHO in September 2012. The majority of cases have respiratory disease, from mild symptoms to severe pneumonia. The newest cases reported indicate that the source of infection remains active in the Middle East and is present throughout a large area.

More information, situation updates and WHO guidelines

Pandemic Influenza Preparedness (PIP) Framework

PIP Framework

WHO-led global collaboration for the sharing of influenza viruses and access to vaccines and other benefits

Country activities

Avian influenza A(H7N9)

Avian influenza A(H7N9) is one subgroup among the larger group of H7 viruses, which normally circulate among birds. The first reports of human infections with this new strain, detected in China, were reported to WHO on 31 March 2013.

More information, situation updates and WHO guidelines

Flu Focus

Flu Focus

Information and resources on influenza in the WHO European Region

Data and statistics

Up to 20%

of the population in the northern hemisphere is affected by annual influenza epidemics during autumn and winter.

More data and statistics


Flu: the 5 things everyone needs to know