Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b Virus in Poultry, Benin, 2021

Emerg Infect Dis. 2022 Dec;28(12):2534-2537. doi: 10.3201/eid2812.221020.

Abstract

In August 2021, we detected highly pathogenic avian influenza A(H5N1) clade 2.3.4.4b viruses in poultry in southern Benin. The isolates were genetically similar to H5N1 viruses of clade 2.3.4.4b isolated during the same period in Africa and Europe. We also found evidence for 2 separate introductions of these viruses into Benin.

Keywords: Benin; H5N1 subtype; One Health; antigenic cartography; genetic characterization; highly pathogenic avian influenza; influenza; phylogenetic analysis; poultry; respiratory infections; viruses; zoonoses.

Publication types

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

MeSH terms

  • Animals
  • Benin / epidemiology
  • Birds
  • Humans
  • Influenza A Virus, H5N1 Subtype*
  • Influenza in Birds* / epidemiology
  • Influenza, Human*
  • Phylogeny
  • Poultry