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Seasonal influenza vaccines

influenza vaccinationInfluenza is a vaccine preventable disease and influenza vaccines have been available for use in Europe since the 1960s.

A number of variants of the influenza viruses co-circulate each year. Immunity to the infecting influenza virus type develops following a natural influenza infection. However, there is little cross-immunity between influenza types/subtypes or lineages. This is why several influenza strains must be included into combination vaccines.

Currently most influenza vaccines contain three different influenza strains (trivalent): two influenza A (H1N1 and H3N2 subtypes) and one influenza B (Victoria or Yamagata lineages).

Starting from the influenza season 2014–15 new quadrivalent combination vaccines containing four different influenza strains are gradually becoming available in the European Union/European Economic Area (EU/EEA). These vaccines contain two influenza A (H1N1 and H3N2 subtypes) and two influenza B (Victoria and Yamagata lineages) strains.

A yearly survey is conducted on seasonal influenza immunisation policies and vaccination coverage rates. To accompany the report on the 2012–13 influenza season, country profiles detailing vaccination policies, data collection methods and vaccination coverage were also produced.

Read more about seasonal influenza vaccines





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