FLU 003 FLU 003 is an international observational study to characterize adults who are hospitalized with complications of Influenza A - Pandemic H1N1 (H1N1v). This study will open in September 2009 and will enroll patients hospitalized with severe and/or complicated Influenza A in geographically diverse locations. The goal is to enroll 1000 patients with H1N1v and follow them for 60 days. For further details about the trial go to the INSIGHT website.