Box 2: Local reporting criteria for suspected human H5N1 influenza cases in Hong Kong (from ref 5) Reporting Criteria for Human Influenza A (H5, H7, or H9) infection An individual fulfilling both the Clinical Criteria AND Epidemiological Criteria should be reported to CHP for further investigation.   Clinical Criteria   person with acute respiratory illness, characterized by fever (temperature >38oC) and cough and/or sore throat, OR   person with severe pneumonia, OR   person died of unexplained acute respiratory illness         Epidemiological Criteria   recent (less than 1 week) contact with a human case of Influenza A (H5), Influenza A (H7) or Influenza A (H9), OR   recent (less than 1 week) contact with diseased poultry, diseased wild bird, or their carcasses in a country / area with documented avian influenza H5 infection in birds in recent 6 months*, OR   recent (less than 1 week) contact with diseased poultry, diseased wild bird, or their carcasses in a country / area with documented indigenous human case of Influenza A (H5), Influenza A (H7) or Influenza A (H9) in recent 6 months*, OR   worked in a laboratory that is processing samples from persons or animals that are suspected from avian influenza infection       * The list of country / area with documented avian influenza H5 infection in birds (including poultry and wild birds) and indigenous human case of Influenza A (H5), Influenza A (H7) or Influenza A (H9) in recent 6 months will be regularly updated and posted on CHP website.