TABLE 2

Potential precursor viruses for predominate genotypes of low-pathogenic H5 avian influenza virus introductions in domestic poultry in the United States and Canada (2001 to 2017)

Representative isolateIntroductionPotential precursor virusaNo. of possible progenitor genesSequence identity (%)b
HANAPB2PB1PANPMPNS
A/turkey/Wisconsin/17-007146-1/2017CPF-WI-2017(H5N2)A/northernpintail/Ohio/15OS5861/2015(H5N2)499.1498.8198.2698.96
A/turkey/Missouri/16-014037-7/2016CPF-MO-2016(H5N1)A/canadagoose/DelawareBay/601/2016(H5N1)898.8299.2999.4399.5699.3599.5399.4799.52
A/turkey/MB/FAV10/2010CPF-MB-2010(H5N2)A/americangreen-wingedteal/Illinois/2975/2009(Mixed)498.7498.1898.8899.29
A/turkey/VA/50547718/2007CPF-VA-2007(H5N1)A/mallard/PA/454069-9/2006(H5N1)498.7499.3998.3199.40
A/turkey/CA/D0208651C/02cCPF-CA-2002(H5N2)
A/duck/NewYork/16-020978-2orig/2016cLBM-NY-2016(H5N2)
A/chicken/NewJersey/150026592/2015LBM-NJ-2015(H5N1)A/americangreen-wingedteal/Wisconsin/11OS3580/2011 (H11N2)498.1898.3398.5599.16
A/duck/NewJersey/11-064045-002/2011LBM-NJ-2011(H5N2)A/mallard/Ohio/11OS1961/2011(H5N2)499.6099.8698.9299.80
A/duck/NewYork/08-000759-001/2008cLBM-NY-2007(H5N2)
A/chicken/NewJersey/2514/2008LBM-NJ-2007(H5N2)A/mallard/Maryland/07OS2433/2007(H5N2)398.9098.2598.24
A/turkey/NewYork/465977/2006LBM-NY-2006(H5N2)A/americanwigeon/Iowa/463993/2006(H5N2)499.0898.5498.5398.29
A/chicken/Pennsylvania/4460807/2006LBM-NJ-2006(H5N2)aA/mallard/Maryland/897/2004(H5N2)498.6398.7599.0199.29
A/avian/NewYork/448534/2006LBM-NJ-2006(H5N2)bA/mallard/Ohio/468158/2006(H5N2)498.3498.6398.1498.30
A/duck/NJ/1172287/2001LBM-NJ-2001(H5N2)A/mallard/Maryland/302/2001(H5N2)398.5898.4899.42
A/mallard/Michigan/15-031493-1orig/2015BYP-MI-2015(H5N2)A/mallard/Ohio/11OS2156/2011(H5N2)498.6898.9698.5799.30
A/duck/Oregon/4596743/2006BYP-OR-2006(H5N2)A/americanwidgeon/Oregon/467919/2006(H5N2)899.60100.0099.8399.7899.8699.8199.7399.88
A/quail/California/K1400794/2014GBP-CA-2014(H5N8)A/mallard/California/1479/2013(mixed)398.0598.0799.20
A/pheasant/Idaho/08-002590-63/2008GBP-ID-2008(H5N8)A/ruddyturnstone/NewJersey/AI06-582/2006(H6N7)398.4098.7898.40
  • a A potential precursor virus was defined by the virus with at least three possible progenitor genes (see Materials and Methods for details).

  • b Only sequence identity levels of >98% are shown.

  • c No data for potential precursor virus, number of possible progenitor genes, or sequence identity because the complete genome was not available.