| influenza a virus (a/northern pintail/alaska/303/2012(h4n2)) | no rank | | | no rank | 1918880 |
| influenza a virus (a/northern pintail/california/44345-762/2007(h4n2)) | no rank | viruses and viroids | viruses | no rank | 579440 |
| influenza a virus (a/northern pintail/wisconsin/11os3295/2011(h4n2)) | no rank | | | no rank | 1460792 |
| influenza a virus (a/pintail/mongolia/2-11/2007(h4n2)) | no rank | viruses and viroids | viruses | no rank | 1036818 |