| borrelia hermsii | 44 | species | bacteria | bacteria | 140 |
| elizabethkingia meningoseptica | 44 | species | bacteria | bacteria | 238 |
| ralstonia pickettii | 44 | species | bacteria | bacteria | 329 |
| dichelobacter nodosus | 44 | species | bacteria | bacteria | 870 |
| megasphaera | 44 | genus | bacteria | | 906 |
| arenavirus | 44 | genus | viruses | | 11618 |
| caliciviridae | 44 | family | viruses | | 11974 |
| photorhabdus | 44 | genus | bacteria | | 29487 |
| microsporum | 44 | genus | plants | | 34392 |
| dermacentor andersoni | 44 | species | invertebrates | tick | 34620 |
| lomentospora prolificans | 44 | species | plants | fungi | 41688 |
| mycoplasma hyopneumoniae | 45 | species | bacteria | bacteria | 2099 |
| hymenolepis diminuta | 45 | species | invertebrates | helminths | 6216 |
| streptococcus mitis | 45 | species | bacteria | bacteria | 28037 |
| trypanosoma brucei rhodesiense | 45 | subspecies | invertebrates | protozoa | 31286 |
| rhipicephalus appendiculatus | 45 | species | invertebrates | tick | 34631 |
| varroa jacobsoni | 45 | species | invertebrates | | 62625 |
| citrobacter rodentium | 45 | species | bacteria | bacteria | 67825 |
| achromobacter xylosoxidans | 45 | species | bacteria | bacteria | 85698 |
| deltapapillomavirus 4 | 45 | species | viruses | viruses | 337052 |
| brachyspira hyodysenteriae | 46 | species | bacteria | bacteria | 159 |
| morganella morganii | 46 | species | bacteria | bacteria | 582 |
| mycobacterium ulcerans | 46 | species | bacteria | bacteria | 1809 |
| spiroplasma | 46 | genus | bacteria | | 2132 |
| halomonas | 46 | genus | bacteria | | 2745 |
| aureobasidium pullulans | 46 | species | plants | fungi | 5580 |
| babesia bovis | 46 | species | invertebrates | protozoa | 5865 |
| ostertagia ostertagi | 46 | species | invertebrates | helminths | 6317 |
| feline panleukopenia virus | 46 | no rank | viruses | viruses | 10786 |
| kunjin virus | 46 | no rank | viruses | viruses | 11077 |
| viral hemorrhagic septicemia virus | 46 | no rank | viruses | viruses | 11287 |
| penicillium expansum | 46 | species | plants | fungi | 27334 |
| calliphora vomitoria | 46 | species | invertebrates | fly | 27454 |
| borreliella afzelii | 46 | species | bacteria | bacteria | 29518 |
| gyrodactylus | 46 | genus | invertebrates | | 37846 |
| leishmania chagasi | 46 | species | invertebrates | protozoa | 44271 |
| necator americanus | 46 | species | invertebrates | helminths | 51031 |
| batrachochytrium dendrobatidis | 46 | species | plants | fungi | 109871 |
| eikenella | 47 | genus | bacteria | | 538 |
| eikenella corrodens | 47 | species | bacteria | bacteria | 539 |
| morganella | 47 | genus | bacteria | | 581 |
| bacteroides thetaiotaomicron | 47 | species | bacteria | bacteria | 818 |
| mycoplasma gallisepticum | 47 | species | bacteria | bacteria | 2096 |
| poliovirus 1 | 47 | no rank | viruses | viruses | 12080 |
| ectromelia virus | 47 | species | viruses | viruses | 12643 |
| arcobacter | 47 | genus | bacteria | | 28196 |
| paenibacillus | 47 | genus | bacteria | | 44249 |
| pantoea | 47 | genus | bacteria | | 53335 |
| xylella | 48 | genus | bacteria | | 2370 |
| trichophyton rubrum | 48 | species | plants | fungi | 5551 |
| scedosporium boydii | 48 | species | plants | fungi | 5597 |
| strongyloides stercoralis | 48 | species | invertebrates | helminths | 6248 |
| human herpesvirus 7 | 48 | species | viruses | viruses | 10372 |
| african swine fever virus | 48 | species | viruses | viruses | 10497 |
| ross river virus | 48 | species | viruses | viruses | 11029 |
| influenza c virus | 48 | species | viruses | viruses | 11552 |
| ancylostoma caninum | 48 | species | invertebrates | helminths | 29170 |
| pseudoalteromonas | 48 | genus | bacteria | | 53246 |
| malassezia furfur | 48 | species | plants | fungi | 55194 |
| colletotrichum gloeosporioides | 48 | species | plants | fungi | 474922 |
| leptospira interrogans | 49 | species | bacteria | bacteria | 173 |
| xenorhabdus | 49 | genus | bacteria | | 626 |
| selenomonas | 49 | genus | bacteria | | 970 |
| capnocytophaga | 49 | genus | bacteria | | 1016 |
| actinomyces naeslundii | 49 | species | bacteria | bacteria | 1655 |
| mycobacterium kansasii | 49 | species | bacteria | bacteria | 1768 |
| thermomyces lanuginosus | 49 | species | plants | fungi | 5541 |
| leishmania tropica | 49 | species | invertebrates | protozoa | 5666 |
| rhipicephalus microplus | 49 | species | invertebrates | tick | 6941 |
| orthopoxvirus | 49 | genus | viruses | | 10242 |
| orthobunyavirus | 49 | genus | viruses | | 11572 |
| veillonella | 49 | genus | bacteria | | 29465 |
| borreliella garinii | 49 | species | bacteria | bacteria | 29519 |
| norwalk-like virus | 49 | no rank | viruses | viruses | 95340 |
| chronic wasting disease | 49 | | | | |
| comamonas testosteroni | 50 | species | bacteria | bacteria | 285 |
| providencia | 50 | genus | bacteria | | 586 |
| ehrlichia canis | 50 | species | bacteria | bacteria | 944 |
| streptococcus suis | 50 | species | bacteria | bacteria | 1307 |
| amycolatopsis | 50 | genus | bacteria | | 1813 |
| gardnerella | 50 | genus | bacteria | | 2701 |
| kluyveromyces marxianus | 50 | species | plants | fungi | 4911 |
| blastomyces dermatitidis | 50 | species | plants | fungi | 5039 |
| plasmodium gallinaceum | 50 | species | invertebrates | protozoa | 5849 |
| toxocara canis | 50 | species | invertebrates | helminths | 6265 |
| glossina palpalis | 50 | species | invertebrates | fly | 7397 |
| bovine coronavirus | 50 | no rank | viruses | viruses | 11128 |
| candidatus phytoplasma | 50 | genus | bacteria | | 33926 |
| rhodococcus equi | 50 | species | bacteria | bacteria | 43767 |
| porcine circovirus 2 | 50 | species | viruses | viruses | 85708 |
| spirochaeta | 51 | genus | bacteria | | 146 |
| rickettsia prowazekii | 51 | species | bacteria | bacteria | 782 |
| mycobacterium marinum | 51 | species | bacteria | bacteria | 1781 |
| nocardia asteroides | 51 | species | bacteria | bacteria | 1824 |
| dirofilaria immitis | 51 | species | invertebrates | helminths | 6287 |
| human parainfluenza virus 3 | 51 | species | viruses | viruses | 11216 |
| trichuris trichiura | 51 | species | invertebrates | helminths | 36087 |
| nipah virus | 51 | species | viruses | viruses | 121791 |
| hafnia | 52 | genus | bacteria | | 568 |
| phormidium | 52 | genus | bacteria | | 1198 |