Detection of a Novel Reassortant H9N9 Avian Influenza Virus in Free-Range Ducks in Bangladesh

Viruses. 2021 Nov 24;13(12):2357. doi: 10.3390/v13122357.

Abstract

Wild aquatic birds are the primary natural reservoir for influenza A viruses (IAVs). In this study, an A(H9N9) influenza A virus (A/duck/Bangladesh/44493/2020) was identified via routine surveillance in free-range domestic ducks in Bangladesh. Phylogenetic analysis of hemagglutinin showed that the H9N9 virus belonged to the Y439-like lineage. The HA gene had the highest nucleotide identity to A/Bean Goose (Anser fabalis)/South Korea/KNU 2019-16/2019 (H9N2). The other seven gene segments clustered within the Eurasian lineage.

Keywords: Bangladesh; avian influenza; free-range ducks.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Ducks / virology*
  • Hemagglutinin Glycoproteins, Influenza Virus / genetics
  • Influenza A Virus, H9N2 Subtype / genetics*
  • Influenza A Virus, H9N2 Subtype / isolation & purification
  • Influenza in Birds / virology*
  • Phylogeny
  • Poultry Diseases / virology*
  • Reassortant Viruses / genetics*

Substances

  • Hemagglutinin Glycoproteins, Influenza Virus