Epidemiology of human infections with highly pathogenic avian influenza A(H7N9) virus in Guangdong, 2016 to 2017

Euro Surveill. 2017 Jul 6;22(27):30568. doi: 10.2807/1560-7917.ES.2017.22.27.30568.


We describe the epidemiology of highly pathogenic avian influenza (HPAI) A(H7N9) based on poultry market environmental surveillance and laboratory-confirmed human cases (n = 9) in Guangdong, China. We also compare the epidemiology between human cases of high- and low-pathogenic avian influenza A(H7N9) (n = 51) in Guangdong. Case fatality and severity were similar. Touching sick or dead poultry was the most important risk factor for HPAI A(H7N9) infections and should be highlighted for the control of future influenza A(H7N9) epidemics.

Keywords: Guangdong; H7N9; HPAI; Influenza.

MeSH terms

  • Animals
  • China / epidemiology
  • Commerce
  • Environmental Microbiology*
  • Epidemics
  • Humans
  • Influenza A Virus, H7N9 Subtype / isolation & purification
  • Influenza A Virus, H7N9 Subtype / pathogenicity*
  • Influenza in Birds / epidemiology*
  • Influenza in Birds / transmission
  • Influenza in Birds / virology
  • Influenza, Human / diagnosis
  • Influenza, Human / epidemiology*
  • Influenza, Human / virology
  • Mandatory Reporting
  • Poultry / virology*
  • Prevalence
  • Sentinel Surveillance