Novel Influenza A (H1N1) Surveillance Registry
Novel Influenza A (H1N1) Surveillance Registry
The demographic characteristics, clinical features, course, and outcomes of severe H1N1
 influenza infection requiring intensive care have not been defined rigorously and
 systematically. While the majority of patients in early reports of critically ill novel
 influenza A (H1N1) have respiratory involvement, up to 10-20% may present with
 non-respiratory organ failures, such as shock, seizures, or acute renal failure. The burden
 of disease and resource utilization of these patients remains largely unknown. The purpose of
 this surveillance registry is to characterize the demographics, clinical features, outcomes,
 and resource utilization of patients with H1N1 influenza infection who require intensive
 care.
Inclusion Criteria:

 -  Admission to an intensive care unit at a participating site with confirmed or
 suspected Novel H1N1 Influenza infection

 Exclusion Criteria:

 -  Influenza-like illness due to non-influenza disease and negative testing for influenza