| influenza a virus (a/mule duck/bulgaria/188/2010(h4n2)) | no rank | | | no rank | 1607712 |
| influenza a virus (a/mule duck/bulgaria/369/2009(h4n2)) | no rank | | | no rank | 1607722 |
| influenza a virus (a/mule duck/bulgaria/497/2010(h4n2)) | no rank | | | no rank | 1607723 |
| influenza a virus (a/mule duck/bulgaria/596/2010(h4n2)) | no rank | | | no rank | 1607727 |