Bi-weekly influenza surveillance overview, 15 July 2011, weeks 26-27

During weeks 26–27/2011, low influenza activity was observed in all 17 reporting countries. None of the 17 sentinel specimens were positive for influenza. From non-sentinel sources, 11 influenza A viruses were detected, of which one was sub-typed as A(H3) virus. No cases of severe hospitalised influenza or SARI due to other respiratory pathogens were reported.