Weekly influenza surveillance overview, 3 Oct - 9 Oct 2011 (Week 40)

Surveillance report

During the first week of the influenza season, low influenza activity was notified by all 23 reporting countries. Of 123 sentinel specimens, only two (1.6%) tested positive for influenza. Of eight influenza viruses detected in non-sentinel specimens, six were influenza A viruses and two were B viruses. No hospitalised cases of severe influenza were reported