EuroFlu - Weekly Electronic Bulletin - Week 30 : 23/07/2012-29/07/2012 - 03 August 2012, Issue N° 452-
Influenza activity in Europe at out-of-season levels
Until week 40/2012, the EuroFlu bulletin will be published fortnightly.
- This issue is based on data reported in week 30/2012 by 29 Member States in the WHO European Region.
- Consultation rates for influenza-like illness (ILI) and acute respiratory infection (ARI) are now at low levels in all countries in the Region.
- None of the 26 specimens collected from sentinel sources tested positive for influenza virus.
Outpatient surveillance for ILI and ARI
All 22 countries reporting data on intensity reported low intensity, with decreasing or stable trends in clinical activity overall.
All 22 countries reporting on the geographical spread of influenza reported no activity.
During week 30/2012, sentinel outpatient clinics collected 26 respiratory specimens, none of which tested positive for influenza virus.
Hospital surveillance for severe acute respiratory infection (SARI)
3 countries reported data for hospital-based sentinel surveillance of SARI in week 30/2012: Georgia, Kazakhstan and Kyrgyzstan.
7 respiratory specimens were collected from SARI patients, all of which tested negative for influenza.
Specimens from non-sentinel sources yielded 6 influenza detections in week 30/2012: 3 type A unsubtyped and 3 influenza B.
Since week 21/2012, 427 influenza virus detections were reported: 199 influenza A (47%) and 228 (53%) influenza B.
Of the influenza A viruses, 107 (54%) were subtyped: 5 were A(H1N1)pdm09 and 102 A(H3N2).
Influenza activity is at out-of-season levels throughout the European Region. None of the 26 samples collected from sentinel sources was positive for influenza virus. 6 samples from non-sentinel sources were influenza positive, indicating low influenza activity in the Region.
The EuroFlu bulletin describes and comments on influenza activity in the 53 countries in the WHO European Region. Further information can be obtained from the WHO/Europe and WHO headquarters web sites.