Emergence of Influenza A(H7N4) Virus, Cambodia

Emerg Infect Dis. 2019 Oct;25(10):1988-1991. doi: 10.3201/eid2510.190506. Epub 2019 Oct 17.

Abstract

Active surveillance in high-risk sites in Cambodia has identified multiple low-pathogenicity influenza A(H7) viruses, mainly in ducks. None fall within the A/Anhui/1/2013(H7N9) lineage; however, some A(H7) viruses from 2018 show temporal and phylogenetic similarity to the H7N4 virus that caused a nonfatal infection in Jiangsu Province, China, in December 2017.

Keywords: Cambodia; H7N4; influenza surveillance; influenza virus; live poultry markets; phylogenetics; subtype A/H7N4; viruses; whole genome sequencing; zoonotic infection.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Animals
  • Cambodia / epidemiology
  • China / epidemiology
  • Communicable Diseases, Emerging / epidemiology*
  • Communicable Diseases, Emerging / virology
  • Ducks / virology*
  • Humans
  • Influenza A virus* / genetics
  • Influenza in Birds / epidemiology*
  • Influenza in Birds / virology
  • Influenza, Human / epidemiology
  • Influenza, Human / virology
  • Phylogeny
  • Poultry Diseases / epidemiology*
  • Poultry Diseases / virology