| toscana virus | 23 | no rank | viruses | viruses | 11590 |
| nairovirus | 24 | genus | viruses | | 11592 |
| dugbe virus | 10 | species | viruses | viruses | 11595 |
| hantavirus | 75 | genus | viruses | | 11598 |
| hantaan virus | 61 | species | viruses | viruses | 11599 |
| seoul virus | 27 | species | viruses | viruses | 11608 |
| arenavirus | 44 | genus | viruses | | 11618 |
| junin mammarenavirus | 31 | species | viruses | viruses | 11619 |
| lassa mammarenavirus | 41 | species | viruses | viruses | 11620 |
| lymphocytic choriomeningitis mammarenavirus | 148 | species | viruses | viruses | 11623 |
| machupo mammarenavirus | 18 | species | viruses | viruses | 11628 |
| reticuloendotheliosis virus | 68 | species | viruses | viruses | 11636 |
| spumavirus | 31 | genus | viruses | | 11640 |
| lentivirus | 107 | genus | viruses | | 11646 |
| bovine immunodeficiency virus | 33 | species | viruses | viruses | 11657 |
| caprine arthritis encephalitis virus | 40 | species | viruses | viruses | 11660 |
| equine infectious anemia virus | 62 | species | viruses | viruses | 11665 |
| feline immunodeficiency virus | 80 | species | viruses | viruses | 11673 |
| human immunodeficiency virus 1 | 410 | species | viruses | viruses | 11676 |
| human immunodeficiency virus 2 | 399 | species | viruses | viruses | 11709 |
| visna/maedi virus | 61 | species | viruses | viruses | 11741 |
| jaagsiekte sheep retrovirus | 40 | species | viruses | viruses | 11746 |
| mouse mammary tumor virus | 125 | species | viruses | viruses | 11757 |
| feline leukemia virus | 69 | species | viruses | viruses | 11768 |
| murine leukemia virus | 184 | species | viruses | viruses | 11786 |
| avian myeloblastosis virus | 76 | species | viruses | viruses | 11866 |
| avian carcinoma mill hill virus 2 | 11 | species | viruses | viruses | 11870 |
| avian sarcoma virus ct10 | 9 | species | viruses | viruses | 11878 |
| fujinami sarcoma virus | 33 | species | viruses | viruses | 11885 |
| rous sarcoma virus | 199 | species | viruses | viruses | 11886 |
| bovine leukemia virus | 65 | species | viruses | viruses | 11901 |
| human t-lymphotropic virus 1 | 137 | no rank | viruses | viruses | 11908 |
| human t-lymphotropic virus 2 | 60 | no rank | viruses | viruses | 11909 |
| avian leukemia virus | 22 | no rank | viruses | viruses | 11946 |
| caliciviridae | 44 | family | viruses | | 11974 |
| rabbit hemorrhagic disease virus | 37 | species | viruses | viruses | 11976 |
| feline calicivirus | 59 | species | viruses | viruses | 11978 |
| norwalk virus | 73 | species | viruses | viruses | 11983 |
| enterovirus | 109 | genus | viruses | | 12059 |
| human parechovirus 1 | 29 | no rank | viruses | viruses | 12063 |
| swine vesicular disease virus | 23 | no rank | viruses | viruses | 12075 |
| poliovirus 1 | 47 | no rank | viruses | viruses | 12080 |
| human poliovirus 1 strain sabin | 2 | no rank | viruses | viruses | 12082 |
| poliovirus 2 | 26 | no rank | viruses | viruses | 12083 |
| poliovirus 3 | 29 | no rank | viruses | viruses | 12086 |
| enterovirus d70 | 24 | no rank | viruses | viruses | 12090 |
| hepatovirus | 11 | genus | viruses | | 12091 |
| hepatovirus a | 95 | species | viruses | viruses | 12092 |
| cardiovirus | 38 | genus | viruses | | 12103 |
| encephalomyocarditis virus | 105 | no rank | viruses | viruses | 12104 |
| aphthovirus | 36 | genus | viruses | | 12109 |
| foot-and-mouth disease virus | 89 | species | viruses | viruses | 12110 |
| foot-and-mouth disease virus o | 15 | no rank | viruses | viruses | 12118 |
| rhinovirus a2 | 21 | no rank | viruses | viruses | 12130 |
| borna disease virus | 65 | species | viruses | viruses | 12455 |
| human astrovirus 1 | 13 | no rank | viruses | viruses | 12456 |
| hepatitis delta virus | 89 | species | viruses | viruses | 12475 |
| dobrava-belgrade virus | 23 | species | viruses | viruses | 12506 |
| mokola virus | 26 | species | viruses | viruses | 12538 |
| omsk hemorrhagic fever virus | 8 | species | viruses | viruses | 12542 |
| chicken anemia virus | 60 | species | viruses | viruses | 12618 |
| dengue virus | 99 | species | viruses | viruses | 12637 |
| duck hepatitis b virus | 58 | species | viruses | viruses | 12639 |
| ectromelia virus | 47 | species | viruses | viruses | 12643 |
| feline coronavirus | 31 | no rank | viruses | viruses | 12663 |
| human immunodeficiency virus | 455 | species | viruses | viruses | 12721 |
| human parainfluenza virus 1 | 34 | species | viruses | viruses | 12730 |
| respiratory syncytial virus | 164 | species | viruses | viruses | 12814 |
| acidovorax | 31 | genus | bacteria | | 12916 |
| blastocystis hominis | 41 | species | plants | | 12968 |
| globicatella | 5 | genus | bacteria | | 13075 |
| brachyspira innocens | 25 | species | bacteria | bacteria | 13264 |
| suttonella | 3 | genus | bacteria | | 13275 |
| suttonella indologenes | 6 | species | bacteria | bacteria | 13276 |
| theromyzon tessulatum | 24 | species | invertebrates | | 13286 |
| anaerobiospirillum | 29 | genus | bacteria | | 13334 |
| burkholderia mallei | 27 | species | bacteria | bacteria | 13373 |
| haemadipsa | 6 | genus | invertebrates | | 13554 |
| lucilia sericata | 38 | species | invertebrates | fly | 13632 |
| sphingomonas | 73 | genus | bacteria | | 13687 |
| sphingomonas paucimobilis | 56 | species | bacteria | bacteria | 13689 |
| penicillium expansum | 46 | species | plants | fungi | 27334 |
| colletotrichum coccodes | 24 | species | plants | fungi | 27358 |
| calliphora vomitoria | 46 | species | invertebrates | fly | 27454 |
| cooperia oncophora | 29 | species | invertebrates | helminths | 27828 |
| fasciolopsis buski | 11 | species | invertebrates | helminths | 27845 |
| calicophoron calicophorum | 4 | species | invertebrates | helminths | 27854 |
| encephalitozoon hellem | 43 | species | plants | fungi | 27973 |
| ichthyosporidium giganteum | 2 | species | plants | fungi | 27976 |
| cryptosporidium baileyi | 22 | species | invertebrates | protozoa | 27987 |
| theileria mutans | 14 | species | invertebrates | protozoa | 27991 |
| theileria taurotragi | 7 | species | invertebrates | protozoa | 27993 |
| cytauxzoon felis | 12 | species | invertebrates | protozoa | 27996 |
| acanthamoeba palestinensis | 9 | species | invertebrates | protozoa | 28015 |
| staphylococcus lugdunensis | 24 | species | bacteria | bacteria | 28035 |
| streptococcus mitis | 45 | species | bacteria | bacteria | 28037 |
| saccharopolyspora rectivirgula | 29 | species | bacteria | bacteria | 28042 |
| mycobacterium celatum | 16 | species | bacteria | bacteria | 28045 |
| campylobacter upsaliensis | 26 | species | bacteria | bacteria | 28080 |
| legionella anisa | 11 | species | bacteria | bacteria | 28082 |