A Retrospective, Observational Registry of Participants With Avian Influenza Infection

Avian/Pandemic Influenza Registry

This is a global, multi-center, observational registry of participants with suspected or confirmed infection with avian influenza A H5N1. Data are collected through retrospective abstraction, from detailed case reports that may be published and available in the public domain, or as incident cases received directly from the treating physician or other medical personnel.

Inclusion Criteria:

• Participants who develop influenza-like symptoms and who are considered to be epidemiologically linked by time, place, and exposure to a probable or confirmed avian influenza or human case of H5N1 infection are eligible for inclusion in the Registry. Cases with atypical symptom presentation (e.g., non-respiratory) are also included, in keeping with evolving knowledge about the clinical presentation of avian influenza.
• Participants with documented positive serological test who either remain asymptomatic or experience mild illness only
• Participants with laboratory confirmation of infection with influenza A (H5N1) who survive long enough to present for medical care

Exclusion Criteria:

- There are no exclusion criteria in this study