| trichomonas fecalis | -3 | species | | protozoa | |
| trichomonas phasioni | -3 | species | | protozoa | |
| trichostrongylus affinus | -3 | species | | helminths | |
| trichostrongylus hamatis | -3 | species | | helminths | |
| trichostrongylus lerouxi | 1 | species | | helminths | |
| thelazia californiensis | 6 | species | | helminths | |
| trichomaris invadens | 4 | species | | fungi | |
| scrapie agent | 79 | species | | | |
| stephanofilaria | 3 | genus | | | |
| protostrongylus skrjabini | -3 | species | | helminths | |
| protostrongylus sylvilagi | -3 | species | | helminths | |
| psorergates ovis | 5 | species | | | |
| radfordia ensifera | 5 | species | | | |
| plistophora cepedianae | -3 | species | | fungi | |
| prosarcoptes pitheci | -3 | species | | | |
| prosthogonimus macrorchis | 1 | species | | helminths | |
| protostrongylus brevispiculum | 2 | species | | helminths | |
| physaloptera dispar | -3 | species | | helminths | |
| physaloptera felidis | 1 | species | | helminths | |
| physaloptera tumefasciens | -3 | species | | helminths | |
| plagiorchis lutrae | -3 | species | | helminths | |
| plasmodium griffithsi | -3 | species | | protozoa | |
| plistophora anguillarum | 4 | species | | fungi | |
| oesophagostomum georgianum | -3 | species | | helminths | |
| ornithobilharzia turkestanicum | 4 | species | | helminths | |
| ovadendron ochraceum | -3 | species | | fungi | |
| paracoroptes allenopitheci | -3 | species | | | |
| paragonimus caliensis | 2 | species | | helminths | 1902345 |
| nosema africanum | -3 | species | | fungi | |
| nosema lophi | -3 | species | | fungi | |
| oesophagostomum aspersum | -3 | species | | helminths | |
| oesophagostomum brevicaudum | -3 | species | | helminths | |
| metastrongylus madagascariensis | -3 | species | | helminths | |
| nematodirus aspinosus | -3 | species | | helminths | |
| kasokero virus | 1 | species | | viruses | 1712570 |
| limnatis africana | -3 | species | | | |
| megninia cubitalis | 1 | species | | | |
| himasthla muehlensi | -3 | species | | helminths | |
| hypoderma moschiferi | -3 | species | | fly | |
| inermicapsifer madagascariensis | 8 | species | | helminths | |
| gasterophilus meridionalis | 1 | species | | fly | |
| globocephalus versteri | -3 | species | | helminths | |
| grammocephalus clathratus | 1 | species | | helminths | |
| acremonium recifei | 4 | species | | fungi | |
| acanthocephalus rauschi | -3 | species | | helminths | |
| epomidiostomum orispinum | 1 | species | | helminths | |
| far eastern tick-borne encephalitis virus | 1 | no rank | | viruses | |
| alternaria stemphyloides | -3 | species | | fungi | |
| alaria marcianae | 9 | species | | helminths | 1684801 |
| agriostomum vryburgi | 1 | species | | helminths | |
| acremonium roseogriseum | -3 | species | | fungi | |
| aspergillus fisherianus | -3 | species | | fungi | |
| ancylostoma malayanum | 1 | species | | helminths | |
| ancylostoma kusimaensis | -3 | species | | helminths | |
| aspergillus terreus group | -3 | species | | fungi | |
| diphyllobothrium mansonoides | -3 | species | | helminths | |
| echinochasmus jiufoensis | -3 | species | | helminths | |
| echinostoma jassyenese | -3 | species | | helminths | |
| dermoglyphus elongatus | 1 | species | | | |
| dictyocaulus cameli | -3 | species | | helminths | |
| dipetalonema arbuta | -3 | species | | helminths | |
| dipetalonema reconditum | 13 | species | | helminths | |
| diphyllobothrium cameroni | -3 | species | | helminths | |
| diphyllobothrium erinaceieuropaei | -3 | species | | helminths | |
| capillaria caudinflata | 3 | species | | helminths | |
| capillaria bilobata | 1 | species | | helminths | |
| demodex equi | -3 | species | | | |
| cnemidocoptes pilae | 1 | species | | | |
| collyriclum faba | 4 | species | | helminths | 1163412 |
| cuterebra americana | 1 | species | | fly | |
| cheyletiella blakei | 5 | species | | | |
| cheyletiella strandtmanni | -3 | species | | | |
| chirodiscoides caviae | 3 | species | | | |
| cnemidocoptes gallinae | 1 | species | | | |
| vermipsylla perplexa | -3 | species | | flea | |
| ceratophyllus columbae | 2 | species | | flea | |
| ceratophyllus garei | 5 | species | | flea | |
| chaetophoma dermo-unguis | -3 | species | | fungi | |
| trichodina fultoni | 1 | species | | protozoa | |
| trichostrongylus brevis | -3 | species | | helminths | |
| trixacarus caviae | 6 | species | | | |
| trixacarus diversus | -3 | species | | | |
| vermipsylla dorcadia | -3 | species | | flea | |
| theileria hirci | 7 | species | | protozoa | |
| trichodina domerguei | 4 | species | | protozoa | 1955398 |
| stephanofilaria zaheeri | 2 | species | | helminths | |
| strongylus tremletti | -3 | species | | helminths | |
| taenia brauni | 1 | species | | helminths | |
| simulium columbaczense | -3 | species | | fly | |
| stephanofilaria assamensis | 2 | species | | helminths | |
| rhabditis elongata | -3 | species | | helminths | |
| sarcocystis ovicanis | 5 | species | | protozoa | |
| sarcocystis porcifelis | -3 | species | | protozoa | |
| setaria altaica | 1 | species | | helminths | |
| psorergates bos | 1 | species | | | |
| psoroptes hippotis | -3 | species | | | |
| pyramicocephalus anthocephalus | -3 | species | | helminths | |
| rhabditis bovis | -3 | species | | helminths | |
| phoma hibernica | 2 | species | | fungi | |
| phoma minutella | 1 | species | | fungi | |