| australia | victoria | influenza a virus (a/duck/victoria/d23/1994(h4n2)) | no rank | 8 | 0 |
| bulgaria | khaskovo province | influenza a virus (a/mule duck/bulgaria/369/2009(h4n2)) | no rank | 2 | 0 |
| bulgaria | khaskovo province | influenza a virus (a/mule duck/bulgaria/596/2010(h4n2)) | no rank | 2 | 0 |
| bulgaria | plovdiv province | influenza a virus (a/mule duck/bulgaria/188/2010(h4n2)) | no rank | 2 | 0 |
| bulgaria | plovdiv province | influenza a virus (a/mule duck/bulgaria/497/2010(h4n2)) | no rank | 2 | 0 |
| canada | alberta | influenza a virus (a/blue-winged teal/alberta/580/1979(h4n2)) | no rank | 8 | 0 |
| canada | alberta | influenza a virus (a/mallard duck/alberta/106/1979(h4n2)) | no rank | 8 | 0 |
| canada | alberta | influenza a virus (a/mallard duck/alberta/354/1978(h4n2)) | no rank | 8 | 0 |
| canada | alberta | influenza a virus (a/mallard duck/alberta/630/1984(h4n2)) | no rank | 8 | 0 |
| canada | alberta | influenza a virus (a/mallard/alberta/223/1979(h4n2)) | no rank | 8 | 0 |
| canada | alberta | influenza a virus (a/pintail duck/alb/599/1979(h4n2)) | no rank | 8 | 0 |
| canada | new brunswick | influenza a virus (a/blue-winged teal/new brunswick/03756/2009(h4n2)) | no rank | 8 | 0 |
| canada | ontario | influenza a virus (a/mallard/ontario/15882/2005(h4n2)) | no rank | 8 | 0 |
| chile | | influenza a virus (a/chilean teal/chile/c918/2015(h4n2)) | no rank | 8 | 0 |
| chile | | influenza a virus (a/mallard/chile/c948/2015(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/chicken/anhui/a1402/2014(h4n2)) | no rank | 2 | 0 |
| china | | influenza a virus (a/chicken/shandong/s2510/2012(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/guangdong/s1123/2012(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/guangdong/s1469/2010(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/guangdong/s4040/2011(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/guangxi/125d17/2012(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/hubei/s2213/2012(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/hubei/s2227/2012(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/hunan/8-19/2009(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/hunan/s2046/2011(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/jiangsu/1-15/2011(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/jiangxi/s21046/2012(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/jiangxi/s21055/2012(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/jiangxi/s3261/2009(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/shanghai/28-1/2009(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/shanghai/29-1/2009(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/sichuan/s4202/2011(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/727145/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/77127/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/77136/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/77139/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/77140/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/925028/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/925088/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/925091/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/925096/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/925099/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/925161/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/925166/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/925168/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/duck/zhejiang/925170/2014(h4n2)) | no rank | 8 | 0 |
| china | | influenza a virus (a/goose/guangdong/s1780/2012(h4n2)) | no rank | 8 | 0 |
| china | guangxi | influenza a virus (a/duck/guangxi/912/2008(h4n2)) | no rank | 8 | 0 |
| china | hunan | h4n2 subtype | no rank | 0 | 1 |
| china | hunan | influenza a virus (a/duck/hunan/s11313/2012(h4n2)) | no rank | 8 | 0 |
| china | shanghai shi | h4n2 subtype | no rank | 0 | 2 |
| china | zhejiang | h4n2 subtype | no rank | 0 | 1 |
| georgia | | influenza a virus (a/garganey/georgia/1/2011(h4n2)) | no rank | 2 | 0 |
| georgia | guria region | influenza a virus (a/garganey/georgia/1/2011(h4n2)) | no rank | 8 | 0 |
| germany | | influenza a virus (a/duck/munich/523/1981(h4n2)) | no rank | 1 | 0 |
| guatemala | | influenza a virus (a/american wigeon/guatemala/cip049h112-03/2012(h4n2)) | no rank | 8 | 0 |
| guatemala | | influenza a virus (a/blue-winged teal/guatemala/cip049h101-29/2011(h4n2)) | no rank | 8 | 0 |
| guatemala | | influenza a virus (a/blue-winged teal/guatemala/cip049h102-05/2011(h4n2)) | no rank | 8 | 0 |
| guatemala | | influenza a virus (a/blue-winged teal/guatemala/cip049h108-39/2012(h4n2)) | no rank | 8 | 0 |
| guatemala | | influenza a virus (a/blue-winged teal/guatemala/cip049h108-53/2012(h4n2)) | no rank | 8 | 0 |
| guatemala | | influenza a virus (a/blue-winged teal/guatemala/cip049h109-06/2012(h4n2)) | no rank | 8 | 0 |
| guatemala | | influenza a virus (a/blue-winged teal/guatemala/cip049h109-86/2012(h4n2)) | no rank | 8 | 0 |
| guatemala | | influenza a virus (a/blue-winged teal/guatemala/cip049h112-31/2012(h4n2)) | no rank | 8 | 0 |
| guatemala | | influenza a virus (a/chicken/guatemala/270475-4/2003(h4n2)) | no rank | 7 | 0 |
| guatemala | | influenza a virus (a/northern shoveler/guatemala/cip049h112-79/2012(h4n2)) | no rank | 8 | 0 |
| hong kong | | influenza a virus (a/duck/hong kong/24/1976(h4n2)) | no rank | 8 | 0 |
| japan | hokkaido prefecture | h4n2 subtype | no rank | 0 | 1 |
| japan | hokkaido prefecture | influenza a virus (a/avian/japan/8ki0148/2008(h4n2)) | no rank | 8 | 0 |
| japan | hokkaido prefecture | influenza a virus (a/duck/hokkaido/143/2004(h4n2)) | no rank | 9 | 0 |
| japan | hokkaido prefecture | influenza a virus (a/duck/hokkaido/491003/2014(h4n2)) | no rank | 8 | 0 |
| mexico | | influenza a virus (a/environment/mexico/cpa-04740/2011(h4n2)) | no rank | 8 | 0 |
| mexico | mexico | h4n2 subtype | no rank | 0 | 1 |
| mongolia | | influenza a virus (a/pintail/mongolia/2-11/2007(h4n2)) | no rank | 6 | 0 |
| netherlands | | influenza a virus (a/mallard duck/netherlands/18/2012(h4n2)) | no rank | 8 | 0 |
| netherlands | | influenza a virus (a/mallard duck/netherlands/53/2006(h4n2)) | no rank | 8 | 0 |
| netherlands | | influenza a virus (a/mallard/netherlands/18/2012(h4n2)) | no rank | 1 | 0 |
| netherlands | | influenza a virus (a/mallard/netherlands/2/2005(h4n2)) | no rank | 8 | 0 |
| netherlands | | influenza a virus (a/mallard/netherlands/45/2008(h4n2)) | no rank | 1 | 0 |
| netherlands | | influenza a virus (a/mallard/netherlands/53/2006(h4n2)) | no rank | 1 | 0 |
| netherlands | | influenza a virus (a/mallard/netherlands/58/2006(h4n2)) | no rank | 1 | 0 |
| netherlands | | influenza a virus (a/mallard/netherlands/7/2007(h4n2)) | no rank | 8 | 0 |
| netherlands | south holland province | influenza a virus (a/mallard/netherlands/12/2001(h4n2)) | no rank | 8 | 0 |
| russia | | influenza a virus (a/duck/primorie/3672/02(h4n2)) | no rank | 4 | 0 |
| russia | | influenza a virus (a/mallard/vladimir/446/2009(h4n2)) | no rank | 1 | 0 |
| russia | krasnoyarsk krai | influenza a virus (a/duck/primorie/3672/02(h4n2)) | no rank | 4 | 0 |
| south africa | | influenza a virus (a/egyptian goose/south africa/ai1556/2008(h4n2)) | no rank | 8 | 0 |
| south korea | | influenza a virus (a/duck/guangxi/912/2008(h4n2)) | no rank | 1 | 0 |
| south korea | | influenza a virus (a/duck/korea/a57/2011(h4n2)) | no rank | 1 | 0 |
| south korea | | influenza a virus (a/mallard duck/korea/cbu142426/2014(h4n2)) | no rank | 6 | 0 |
| south korea | | influenza a virus (a/mallard duck/korea/lbm188/2008(h4n2)) | no rank | 7 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/1195/2002(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/274/2002(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/5709/2005(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/5724/2005(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/68504/2007(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/68551/2007(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/68940/2007(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/79308/2008(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/79316/2008(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/79331/2008(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/79333/2008(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/79361/2008(h4n2)) | no rank | 2 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/79372/2008(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/79391/2008(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/79423/2008(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/79976/2008(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/80114/2008(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/80190/2008(h4n2)) | no rank | 8 | 0 |
| sweden | kalmar | influenza a virus (a/mallard/sweden/906/2002(h4n2)) | no rank | 8 | 0 |
| taiwan | | influenza a virus (a/duck/taiwan/wb1/1998(h4n2)) | no rank | 1 | 0 |
| taiwan | | influenza a virus (a/duck/taiwan/wb787/2005(h4n2)) | no rank | 1 | 0 |
| united states | | influenza a virus (a/blue-winged teal/minnesota/sg-00452/2008(h4n2)) | no rank | 5 | 0 |
| united states | | influenza a virus (a/blue-winged teal/minnesota/sg-00798/2008(h4n2)) | no rank | 2 | 0 |
| united states | | influenza a virus (a/green-winged teal/ohio/16os3692/2016(h4n2)) | no rank | 8 | 0 |
| united states | | influenza a virus (a/mallard/minnesota/371/1998(h4n2)) | no rank | 4 | 0 |
| united states | | influenza a virus (a/mallard/minnesota/95/1998(h4n2)) | no rank | 6 | 0 |
| united states | | influenza a virus (a/mallard/minnesota/uga14-2238/2014(h4n2)) | no rank | 2 | 0 |
| united states | | influenza a virus (a/mallard/minnesota/ugai14-3336/2014(h4n2)) | no rank | 1 | 0 |
| united states | | influenza a virus (a/mallard/ohio/15os5718/2015(h4n2)) | no rank | 8 | 0 |
| united states | | influenza a virus (a/mallard/ohio/686/2002(h4n2)) | no rank | 6 | 0 |
| united states | | influenza a virus (a/mallard/south dakota/sg-00457/2008(h4n2)) | no rank | 6 | 0 |
| united states | | influenza a virus (a/quail/california/d113023808/2012(h4n2)) | no rank | 8 | 0 |
| united states | alaska | influenza a virus (a/northern pintail/alaska/303/2012(h4n2)) | no rank | 8 | 0 |
| united states | california | influenza a virus (a/environment/california/nwrc183970-18/2006(h4n2)) | no rank | 1 | 0 |
| united states | california | influenza a virus (a/mallard/california/5192/2009(h4n2)) | no rank | 8 | 0 |
| united states | california | influenza a virus (a/mallard/california/5495/2009(h4n2)) | no rank | 8 | 0 |
| united states | california | influenza a virus (a/mallard/california/jn808/2006(h4n2)) | no rank | 11 | 0 |
| united states | california | influenza a virus (a/northern pintail/california/44345-762/2007(h4n2)) | no rank | 7 | 0 |
| united states | california | influenza a virus (a/pekin duck/california/p30/2006(h4n2)) | no rank | 8 | 0 |
| united states | colorado | influenza a virus (a/environment/colorado/nwrc186600-24/2007(h4n2)) | no rank | 1 | 0 |
| united states | illinois | influenza a virus (a/mallard/illinois/11os4311/2011(h4n2)) | no rank | 8 | 0 |
| united states | iowa | influenza a virus (a/mallard/iowa/10os2685/2010(h4n2)) | no rank | 8 | 0 |
| united states | iowa | influenza a virus (a/mallard/iowa/10os2692/2010(h4n2)) | no rank | 8 | 0 |
| united states | louisiana | influenza a virus (a/blue-winged teal/la/ai13-1334/2013(h4n2)) | no rank | 8 | 0 |
| united states | louisiana | influenza a virus (a/blue-winged teal/louisiana/ugai14-2408/2014(h4n2)) | no rank | 11 | 0 |
| united states | maine | influenza a virus (a/environment/maine/nwrc182336-24/2006(h4n2)) | no rank | 1 | 0 |
| united states | maryland | influenza a virus (a/environment/maryland/14os1376/2014(h4n2)) | no rank | 8 | 0 |
| united states | maryland | influenza a virus (a/environment/maryland/14os1381/2014(h4n2)) | no rank | 8 | 0 |
| united states | maryland | influenza a virus (a/environment/maryland/14os1384/2014(h4n2)) | no rank | 8 | 0 |
| united states | maryland | influenza a virus (a/environment/maryland/14os1489/2014(h4n2)) | no rank | 8 | 0 |
| united states | maryland | influenza a virus (a/mallard/maryland/07os1309/2007(h4n2)) | no rank | 8 | 0 |
| united states | maryland | influenza a virus (a/mallard/maryland/07os1315/2007(h4n2)) | no rank | 8 | 0 |
| united states | maryland | influenza a virus (a/mallard/maryland/07os1338/2007(h4n2)) | no rank | 8 | 0 |
| united states | maryland | influenza a virus (a/mallard/maryland/07os1340/2007(h4n2)) | no rank | 8 | 0 |
| united states | minnesota | influenza a virus (a/environment/minnesota/nwrc182413-24/2006(h4n2)) | no rank | 1 | 0 |
| united states | minnesota | influenza a virus (a/mallard/minnesota/182772/1998(h4n2)) | no rank | 8 | 0 |
| united states | minnesota | influenza a virus (a/turkey/minnesota/16423-3/2014(h4n2)) | no rank | 7 | 0 |
| united states | minnesota | influenza a virus (a/turkey/minnesota/833/1980(h4n2)) | no rank | 8 | 0 |
| united states | new mexico | influenza a virus (a/environment/new mexico/nwrc184137-06/2006(h4n2)) | no rank | 1 | 0 |
| united states | new york | influenza a virus (a/blue-winged teal/new york/370ac/1979(h4n2)) | no rank | 7 | 0 |
| united states | ohio | influenza a virus (a/green-winged teal/ohio/344/1986(h4n2)) | no rank | 8 | 0 |
| united states | ohio | influenza a virus (a/mallard/ohio/14os0965/2014(h4n2)) | no rank | 8 | 0 |
| united states | ohio | influenza a virus (a/mallard/ohio/275/1987(h4n2)) | no rank | 8 | 0 |
| united states | ohio | influenza a virus (a/mallard/ohio/686/2002(h4n2)) | no rank | 8 | 0 |
| united states | ohio | influenza a virus (a/mallard/ohio/94/1989(h4n2)) | no rank | 8 | 0 |
| united states | ohio | influenza a virus (a/mallard/ohio/97/1989(h4n2)) | no rank | 8 | 0 |
| united states | texas | influenza a virus (a/blue-winged teal/texas/ai11-3181/2011(h4n2)) | no rank | 8 | 0 |
| united states | texas | influenza a virus (a/blue-winged teal/texas/ai11-3249/2011(h4n2)) | no rank | 8 | 0 |
| united states | utah | influenza a virus (a/environment/utah/nwrc186341-12/2007(h4n2)) | no rank | 1 | 0 |
| united states | wisconsin | influenza a virus (a/american black duck/wisconsin/2542/2009(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/american green-winged teal/wisconsin/12os4281/2012(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/blue-winged teal/wisconsin/175/1978(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/blue-winged teal/wisconsin/259/1982(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/blue-winged teal/wisconsin/2665/2009(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/blue-winged teal/wisconsin/2713/2009(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/blue-winged teal/wisconsin/281/1982(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/blue-winged teal/wisconsin/345/1976(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/blue-winged teal/wisconsin/440/1979(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/blue-winged teal/wisconsin/63/1978(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/blue-winged teal/wisconsin/778/1976(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/green-winged teal/wisconsin/118/1979(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/long-tailed duck/wisconsin/11os4599/2011(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/10os2659/2010(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/10os3051/2010(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/10os3067/2010(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/11os3491/2011(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/11os4492/2011(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/145/1978(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/1719/1983(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/209/1976(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/2191/1984(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/225/1976(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/251/1976(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/2530/2009(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/2719/2009(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/280/1982(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/333/1981(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/365/1981(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/373/1981(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/477/1981(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/619/1983(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/637/1979(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/851/1982(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/867/1982(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/868/1982(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/903/1982(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/920/1982(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/mallard/wisconsin/94/1976(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/northern pintail/wisconsin/11os3295/2011(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/northern shoveler/wisconsin/2508/2009(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/widgeon/wisconsin/230/1976(h4n2)) | no rank | 8 | 0 |
| united states | wisconsin | influenza a virus (a/wood duck/wisconsin/147/1976(h4n2)) | no rank | 8 | 0 |
| vietnam | | influenza a virus (a/duck/vietnam/oie-2530/2011(h4n2)) | no rank | 8 | 0 |