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Influenza season in Europe getting close to its end: ECDC weekly monitoring

12 Apr 2013
Seasonal influenza in Europe at a glance, week 14

In all reporting countries, influenza activity continued to decline or had already returned to baseline levels. After more than three months of active transmission, a long period compared to other years, the 2012–13 influenza season is waning and getting close to its end, concludes the Weekly Influenza Surveillance Overview for week 14.

Of the 29 countries reporting for week 14/2013, 23 countries indicated low intensity transmission, and all countries reported decreasing or stable trends. No country reported high intensity.
Virological surveillance shows that the proportion of influenza-positive sentinel specimens (35%) has continued to decrease since the peak observed in week 5/2013 (61%), with a considerably lower number of specimens tested.

Since week 40/2012, 47% of sentinel surveillance specimens testing positive for influenza virus have been type A, and 53% type B. Of the influenza A viruses subtyped, the proportion of A(H1)pdm09 viruses has been 63%.

The monthly report on Influenza virus characterisation for Europe is now available for March 2013 and provides information on influenza viruses detected in ECDC-affiliated countries during the 2012–13 season.

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