| trichostrongylus tenuis | 27 | species | invertebrates | helminths | 40351 |
| paenibacillus macerans | 27 | species | bacteria | bacteria | 44252 |
| leishmania mexicana mexicana | 27 | subspecies | invertebrates | protozoa | 44270 |
| balamuthia mandrillaris | 27 | species | invertebrates | protozoa | 66527 |
| trichuris suis | 27 | species | invertebrates | helminths | 68888 |
| cimex lectularius | 27 | species | invertebrates | | 79782 |
| parachlamydia | 27 | genus | bacteria | | 83551 |
| taenia hydatigena | 27 | species | invertebrates | helminths | 85431 |
| acanthocephalus | 27 | genus | invertebrates | | 185725 |
| cryptosporidium hominis | 27 | species | invertebrates | protozoa | 237895 |
| demodex folliculorum | 27 | species | invertebrates | | 481310 |
| psychrobacter | 28 | genus | bacteria | | 497 |
| vibrio mimicus | 28 | species | bacteria | bacteria | 674 |
| campylobacter gracilis | 28 | species | bacteria | bacteria | 824 |
| finegoldia magna | 28 | species | bacteria | bacteria | 1260 |
| aerococcus viridans | 28 | species | bacteria | bacteria | 1377 |
| bacillus mycoides | 28 | species | bacteria | bacteria | 1405 |
| erysipelothrix rhusiopathiae | 28 | species | bacteria | bacteria | 1648 |
| rhodococcus fascians | 28 | species | bacteria | bacteria | 1828 |
| curtobacterium | 28 | genus | bacteria | | 2034 |
| pseudoterranova decipiens | 28 | species | invertebrates | helminths | 6271 |
| trichinella pseudospiralis | 28 | species | invertebrates | helminths | 6337 |
| murray valley encephalitis virus | 28 | species | viruses | viruses | 11079 |
| punta toro virus | 28 | species | viruses | viruses | 11587 |
| prevotella melaninogenica | 28 | species | bacteria | bacteria | 28132 |
| entamoeba invadens | 28 | species | invertebrates | protozoa | 33085 |
| mycobacterium africanum | 28 | species | bacteria | bacteria | 33894 |
| amblyomma variegatum | 28 | species | invertebrates | tick | 34610 |
| pleistophora | 28 | genus | plants | | 35233 |
| california encephalitis virus | 28 | no rank | viruses | viruses | 35305 |
| avian metapneumovirus | 28 | species | viruses | viruses | 38525 |
| african horse sickness virus | 28 | species | viruses | viruses | 40050 |
| fonsecaea pedrosoi | 28 | species | plants | fungi | 40355 |
| xylophilus | 28 | genus | bacteria | | 54066 |
| malassezia pachydermatis | 28 | species | plants | fungi | 77020 |
| hymenolepis nana | 28 | species | invertebrates | helminths | 102285 |
| parechovirus | 28 | genus | viruses | | 138954 |
| taura syndrome virus | 28 | species | viruses | viruses | 142102 |
| [haemophilus] parasuis | 29 | species | bacteria | bacteria | 738 |
| streptococcus anginosus | 29 | species | bacteria | bacteria | 1328 |
| mycobacterium microti | 29 | species | bacteria | bacteria | 1806 |
| mycoplasma hyorhinis | 29 | species | bacteria | bacteria | 2100 |
| parapoxvirus | 29 | genus | viruses | | 10257 |
| rhadinovirus | 29 | genus | viruses | | 10379 |
| eastern equine encephalitis virus | 29 | species | viruses | viruses | 11021 |
| dengue virus 1 | 29 | no rank | viruses | viruses | 11053 |
| human parechovirus 1 | 29 | no rank | viruses | viruses | 12063 |
| poliovirus 3 | 29 | no rank | viruses | viruses | 12086 |
| anaerobiospirillum | 29 | genus | bacteria | | 13334 |
| cooperia oncophora | 29 | species | invertebrates | helminths | 27828 |
| saccharopolyspora rectivirgula | 29 | species | bacteria | bacteria | 28042 |
| arcanobacterium | 29 | genus | bacteria | | 28263 |
| dictyocaulus viviparus | 29 | species | invertebrates | helminths | 29172 |
| mycoplasma haemofelis | 29 | species | bacteria | bacteria | 29501 |
| cladosporium cladosporioides | 29 | species | plants | fungi | 29917 |
| human coronavirus oc43 | 29 | no rank | viruses | viruses | 31631 |
| babesia gibsoni | 29 | species | invertebrates | protozoa | 33632 |
| epidermophyton floccosum | 29 | species | plants | fungi | 34391 |
| parengyodontium album | 29 | species | plants | fungi | 37998 |
| erythroparvovirus | 29 | genus | viruses | | 40121 |
| rickettsia felis | 29 | species | bacteria | bacteria | 42862 |
| brachyspira pilosicoli | 29 | species | bacteria | bacteria | 52584 |
| enterococcus durans | 29 | species | bacteria | bacteria | 53345 |
| mucor hiemalis | 29 | species | plants | fungi | 64493 |
| tannerella | 29 | genus | bacteria | | 195950 |
| mima | 29 | genus | | | |
| brucella ovis | 30 | species | bacteria | bacteria | 236 |
| haemophilus parainfluenzae | 30 | species | bacteria | bacteria | 729 |
| acidaminococcus | 30 | genus | bacteria | | 904 |
| acidaminococcus fermentans | 30 | species | bacteria | bacteria | 905 |
| streptococcus equi | 30 | species | bacteria | bacteria | 1336 |
| planococcus | 30 | genus | bacteria | | 1372 |
| mycoplasma synoviae | 30 | species | bacteria | bacteria | 2109 |
| rhizomucor pusillus | 30 | species | plants | fungi | 4840 |
| rhodotorula mucilaginosa | 30 | species | plants | fungi | 5537 |
| loa loa | 30 | species | invertebrates | helminths | 7209 |
| western equine encephalitis virus | 30 | species | viruses | viruses | 11039 |
| kingella | 30 | genus | bacteria | | 32257 |
| bartonella vinsonii | 30 | species | bacteria | bacteria | 33047 |
| purpureocillium lilacinum | 30 | species | plants | fungi | 33203 |
| chaetomium globosum | 30 | species | plants | fungi | 38033 |
| avian orthoreovirus | 30 | species | viruses | viruses | 38170 |
| lawsonia | 30 | genus | bacteria | | 41707 |
| fusarium subglutinans | 30 | species | plants | fungi | 42677 |
| clonorchis sinensis | 30 | species | invertebrates | helminths | 79923 |
| cyclospora cayetanensis | 30 | species | invertebrates | protozoa | 88456 |
| trichobilharzia ocellata | 30 | species | invertebrates | helminths | 100602 |
| typhus group | 30 | species group | bacteria | | 114292 |
| gammaretrovirus | 30 | genus | viruses | | 153135 |
| influenzavirus a | 30 | genus | viruses | | 197911 |
| neisseria lactamica | 31 | species | bacteria | bacteria | 486 |
| citrobacter koseri | 31 | species | bacteria | bacteria | 545 |
| providencia rettgeri | 31 | species | bacteria | bacteria | 587 |
| streptococcus intermedius | 31 | species | bacteria | bacteria | 1338 |
| aerococcus | 31 | genus | bacteria | | 1375 |
| clostridium septicum | 31 | species | bacteria | bacteria | 1504 |
| mycobacterium gordonae | 31 | species | bacteria | bacteria | 1778 |
| mycobacterium scrofulaceum | 31 | species | bacteria | bacteria | 1783 |
| trypanosoma evansi | 31 | species | invertebrates | protozoa | 5697 |
| ichthyophthirius multifiliis | 31 | species | invertebrates | protozoa | 5932 |