| hendra virus | 43 | species | viruses | viruses | 63330 |
| wheat dwarf virus | 42 | species | viruses | viruses | 10834 |
| staphylococcus saprophyticus | 42 | species | bacteria | bacteria | 29385 |
| providencia stuartii | 41 | species | bacteria | bacteria | 588 |
| streptococcus uberis | 41 | species | bacteria | bacteria | 1349 |
| rift valley fever virus | 41 | species | viruses | viruses | 11588 |
| lassa mammarenavirus | 41 | species | viruses | viruses | 11620 |
| blastocystis hominis | 41 | species | plants | | 12968 |
| trypanosoma brucei gambiense | 41 | subspecies | invertebrates | protozoa | 31285 |
| gymnodinium catenatum | 41 | species | plants | protozoa | 39447 |
| rickettsia conorii | 40 | species | bacteria | bacteria | 781 |
| orientia tsutsugamushi | 40 | species | bacteria | bacteria | 784 |
| fusobacterium necrophorum | 40 | species | bacteria | bacteria | 859 |
| acanthamoeba polyphaga | 40 | species | invertebrates | protozoa | 5757 |
| la crosse virus | 40 | no rank | viruses | viruses | 11577 |
| sporothrix schenckii | 40 | species | plants | fungi | 29908 |
| human coronavirus 229e | 39 | species | viruses | viruses | 11137 |
| rinderpest virus | 39 | species | viruses | viruses | 11241 |
| streptococcus milleri | 39 | species | bacteria | bacteria | 33040 |
| chikungunya virus | 39 | species | viruses | viruses | 37124 |
| mycoplasma mycoides | 38 | species | bacteria | bacteria | 2102 |
| st. louis encephalitis virus | 38 | species | viruses | viruses | 11080 |
| brucella suis | 38 | species | bacteria | bacteria | 29461 |
| mycobacterium abscessus | 38 | species | bacteria | bacteria | 36809 |
| edwardsiella tarda | 37 | species | bacteria | bacteria | 636 |
| staphylococcus intermedius | 37 | species | bacteria | bacteria | 1285 |
| rabbit hemorrhagic disease virus | 37 | species | viruses | viruses | 11976 |
| bartonella bacilliformis | 36 | species | bacteria | bacteria | 774 |
| rickettsia typhi | 36 | species | bacteria | bacteria | 785 |
| staphylococcus haemolyticus | 36 | species | bacteria | bacteria | 1283 |
| molluscum contagiosum virus | 36 | species | viruses | viruses | 10279 |
| coxsackievirus a9 | 36 | no rank | viruses | viruses | 12067 |
| pseudomonas savastanoi pv. glycinea | 35 | no rank | bacteria | bacteria | 318 |
| alexandrium tamarense | 35 | species | plants | protozoa | 2926 |
| angiostrongylus cantonensis | 35 | species | invertebrates | helminths | 6313 |
| monkeypox virus | 35 | species | viruses | viruses | 10244 |
| streptococcus viridans | 35 | species | bacteria | bacteria | 78535 |
| mycobacterium xenopi | 34 | species | bacteria | bacteria | 1789 |
| human parainfluenza virus 1 | 34 | species | viruses | viruses | 12730 |
| pneumocystis jirovecii | 34 | species | plants | fungi | 42068 |
| naegleria fowleri | 33 | species | invertebrates | protozoa | 5763 |
| rotavirus c | 33 | species | viruses | viruses | 36427 |
| listeria ivanovii | 32 | species | bacteria | bacteria | 1638 |
| soybean mosaic virus | 32 | species | viruses | viruses | 12222 |
| zucchini yellow mosaic virus | 32 | species | viruses | viruses | 12232 |
| barley stripe mosaic virus | 32 | species | viruses | viruses | 12327 |
| peste-des-petits-ruminants virus | 32 | species | viruses | viruses | 31604 |
| phakopsora pachyrhizi | 32 | species | plants | fungi | 170000 |
| cystoisospora belli | 32 | species | invertebrates | protozoa | 482538 |
| streptococcus intermedius | 31 | species | bacteria | bacteria | 1338 |
| clostridium septicum | 31 | species | bacteria | bacteria | 1504 |
| mycobacterium scrofulaceum | 31 | species | bacteria | bacteria | 1783 |
| junin mammarenavirus | 31 | species | viruses | viruses | 11619 |
| rabbitpox virus | 31 | no rank | viruses | viruses | 32606 |
| haemophilus parainfluenzae | 30 | species | bacteria | bacteria | 729 |
| streptococcus equi | 30 | species | bacteria | bacteria | 1336 |
| western equine encephalitis virus | 30 | species | viruses | viruses | 11039 |
| cyclospora cayetanensis | 30 | species | invertebrates | protozoa | 88456 |
| rice dwarf virus | 29 | species | viruses | viruses | 10991 |
| eastern equine encephalitis virus | 29 | species | viruses | viruses | 11021 |
| dengue virus 1 | 29 | no rank | viruses | viruses | 11053 |
| southern bean mosaic virus | 29 | species | viruses | viruses | 12139 |
| human coronavirus oc43 | 29 | no rank | viruses | viruses | 31631 |
| rickettsia felis | 29 | species | bacteria | bacteria | 42862 |
| vibrio mimicus | 28 | species | bacteria | bacteria | 674 |
| erysipelothrix rhusiopathiae | 28 | species | bacteria | bacteria | 1648 |
| trichinella pseudospiralis | 28 | species | invertebrates | helminths | 6337 |
| murray valley encephalitis virus | 28 | species | viruses | viruses | 11079 |
| california encephalitis virus | 28 | no rank | viruses | viruses | 35305 |
| african horse sickness virus | 28 | species | viruses | viruses | 40050 |
| abrus precatorius | 27 | species | plants | | 3816 |
| dengue virus 4 | 27 | no rank | viruses | viruses | 11070 |
| seoul virus | 27 | species | viruses | viruses | 11608 |
| burkholderia mallei | 27 | species | bacteria | bacteria | 13373 |
| acinetobacter lwoffii | 27 | species | bacteria | bacteria | 28090 |
| mucor circinelloides | 27 | species | plants | fungi | 36080 |
| balamuthia mandrillaris | 27 | species | invertebrates | protozoa | 66527 |
| cryptosporidium hominis | 27 | species | invertebrates | protozoa | 237895 |
| clostridium tetani | 26 | species | bacteria | bacteria | 1513 |
| dengue virus 3 | 26 | no rank | viruses | viruses | 11069 |
| mycobacterium haemophilum | 26 | species | bacteria | bacteria | 29311 |
| alcelaphine herpesvirus 1 | 26 | species | viruses | viruses | 35252 |
| brucella canis | 26 | species | bacteria | bacteria | 36855 |
| tatlockia micdadei | 25 | species | bacteria | bacteria | 451 |
| listeria seeligeri | 25 | species | bacteria | bacteria | 1640 |
| actinomyces israelii | 25 | species | bacteria | bacteria | 1659 |
| mycobacterium simiae | 25 | species | bacteria | bacteria | 1784 |
| macacine herpesvirus 1 | 25 | species | viruses | viruses | 10325 |
| barley yellow mosaic virus | 25 | species | viruses | viruses | 12465 |
| clavibacter michiganensis subsp. sepedonicus | 25 | subspecies | bacteria | bacteria | 31964 |
| pseudomonas alcaligenes | 25 | species | bacteria | bacteria | 43263 |
| filobasidiella neoformans | 25 | species | | | |
| haemophilus parahaemolyticus | 24 | species | bacteria | bacteria | 735 |
| enterovirus d70 | 24 | no rank | viruses | viruses | 12090 |
| maize dwarf mosaic virus | 24 | species | viruses | viruses | 12203 |
| lichtheimia corymbifera | 24 | species | plants | fungi | 42458 |
| peptostreptococcus anaerobius | 23 | species | bacteria | bacteria | 1261 |
| swine vesicular disease virus | 23 | no rank | viruses | viruses | 12075 |
| sugarcane mosaic virus | 23 | species | viruses | viruses | 12224 |
| dobrava-belgrade virus | 23 | species | viruses | viruses | 12506 |