The 2010/11 seasonal influenza epidemics in Europe are dominated so far by the A(H1N1)2009 viruses which emerged in the 2009 pandemic, although these are now considered seasonal viruses. This is an interim risk assessment and will be up-dated at intervals as more data and analyses emerge.

Likely scenarios and uncertainties in the 2010/2011 influenza season in Europe and beyond.

New strain of swine influenza identified in two workers on a pig farm in Canada.  Swine influenza (SI) is an acute viral infection of the respiratory tract in pigs. Subclinical infections are also common. The mortality is low and recovery usually occurs within 7-10 days.

ECDC produces an annual risk assessment for the seasonal influenza epidemics in Europe. This is following both a recommendation in the report on the handling of the 2009 pandemic adopted by the World Health Assembly in May 2011 and the model developed by ECDC during that pandemic. The first EU seasonal influenza risk assessment was published in January 2011, following the start of the influenza season in late November 2010. In 2012, the season started later than in most years, with the first five countries exceeding their epidemic threshold in week 3/2012.

​The virological influenza pattern observed was not consistent enough to make a clear prediction for the 2011-2012 season in Europe. In general, the findings on the impact of influenza in the southern hemisphere in 2011 were reassuring for Europe, and the match of the A(H3N2) viruses with the vaccine was considered good.

This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 16-22 April 2017 and includes updates on influenza, cholera, poliomyelitis, measles, legionnaires' disease and yellow fever.

ECDC has produced an annual risk assessment of the seasonal influenza epidemics in Europe since the 2010/11 season following the model developed by ECDC during the 2009 pandemic. It gives an early description of the influenza season in the countries affected earliest, providing guidance and information to countries that are affected later, as influenza progresses across Europe over several months. It describes any specifics of the season, particularly in areas where public health or clinical actions are envisaged, as well as highlights areas of uncertainty where further work is required.

This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 9 July - 15 July 2017 and includes updates on measles, influenza A(H7N9), poliomyelitis, West Nile fever, rubella, salmonella and cyclosporiasis.

This issue of the ECDC Communicable Disease Threats Report (CDTR) covers the period 23 July - 29 July 2017 and includes updates on measles, seasonal influenza, West Nile fever, legionnaires' disease and chikungunya, dengue and Zika viruses.