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Table 4 Avian influenza cases detected by different ways in Changsha City, China

From: Detecting influenza and emerging avian influenza virus by influenza and pneumonia surveillance systems in a large city in China, 2005 to 2016

Avian influenza virus Category of cases Detected by ISS system Detected by PSS system Other ways Total
H5N1 Mild cases 0 0 0 0
Severe / death cases 0 0 2 2
H5N6 Mild cases 1 0 0 1
Severe / death cases 0 1 0 1
H7N9 Mild cases 1 0 0 1
Severe / death cases 0 8 0 8
H9N2 Mild cases 2 0 0 2
Severe / death cases 0 0 0 0
Total Mild cases 4 0 0 4
Severe / death cases 0 9 2 11
  1. ISS influenza surveillance system, PSS pneumonia surveillance system