ECDC Weekly influenza surveillance overview - 26 February 2010
This first page contains the main developments this week and can be printed separately or together with the more detailed information following.
- Influenza activity caused by the 2009 pandemic A(H1N1) virus is well past its winter peak in EU/EEA countries. Of the 23 countries reporting this week, all but one reported low influenza intensity.
- Sporadic activity and no geographic spread were reported in the majority of countries reporting.
- Of the 466 specimens collected by sentinel physicians, 19 (4.1%) were positive for influenza virus continuing the declining trend seen over the past few weeks.
- Although circulation of 2009 pandemic A(H1N1) influenza virus has diminished, there is still no evidence of wide circulation of other influenza A viruses apart from few influenza A(H3N2) and B viruses.
- The number of reported severe acute respiratory infection (SARI) cases continues to decline. In week 07/2010, of the 16 SARI cases for whom underlying conditions were documented, six (38%) had no known underlying condition.