and 

    Domain Eukarya
Kingdoms ​Protista, Fungi, Plantae, Animalia

and yet there are certainly fungal pathogens

 protists can be ameboid, ciliated, flagellated, or form spores. 

eukaryotic, heterotrophic  organisms/microorganisms
 yeasts, molds, mushrooms with a chitinous cell wall.

and microscopic animals that cause disease are...

  only a few protists are pathogenic, usually   transmitted via contaminated water,   insect bites, or human-human contact

    Kingdom ​Protista

 pathogenic protists

 Plasmodium (malaria) 
      transmitted via the bites of infected              female Anopheles mosquitoes

 Trypanosoma (African sleeping sickness)
     transmitted via the bites of infected                tsetse flies
       
 Giardia (giardiasis)
     transmitted via anything that gets poop
     on it...water, food, surfaces, or objects

 Kingdom Fungi

 Kingdom Animalia

animals may also act as intermediaries in the disease process....

 Kingdom Plantae

of the 290,000 known species of plants,
zero are pathogenic

found almost everywhere.
used to be categorized as plants
(cell wall, anchored in substrate)
but they do not photosynthesize. 

 protists are autotrophic or heterotrophic

  Toxoplasma gondii (toxoplasmosis)
     transmitted via food, water, soil,         and contact with cats. 
 
​ Entamoeba histolytica (amoebiasis)
     transmitted via contaminated
     food, water or surfaces