Parasites
Parasites in PetriKey
Life cycles, vectors, and diagnostic clues for protozoa and helminths.
37 reference cards
Acanthamoeba species
Contact-lens keratitis free-living amoeba
Ascaris lumbricoides
Large intestinal nematode
Babesia microti
Tick-borne intraerythrocytic piroplasm
Balantidium coli
Only ciliated protozoan that infects humans
Clonorchis sinensis
Chinese liver fluke from raw freshwater fish
Cryptosporidium
Acid-fast oocyst protozoan
Cyclospora cayetanensis
Produce-linked acid-fast coccidian
Cystoisospora belli
Large elliptical oocyst coccidian (former Isospora)
Dientamoeba fragilis
Binucleate intestinal flagellate with no classic cyst
Diphyllobothrium latum
Fish tapeworm linked to B12 deficiency
Dracunculus medinensis
Guinea worm from copepod-contaminated water
Echinococcus granulosus
Hydatid cyst tapeworm of dogs and sheep
Entamoeba histolytica
Amebic trophozoite with RBC clue
Enterobius vermicularis
Pinworm with perianal tape-test clue
Fasciola hepatica
Sheep liver fluke from watercress
Giardia duodenalis
Flagellated protozoan with cysts
Hookworm (Ancylostoma/Necator)
Skin-penetrating cause of iron-deficiency anemia
Leishmania species
Sandfly-borne macrophage parasite
Loa loa
African eye worm with Calabar swellings
Naegleria fowleri
Freshwater brain-eating free-living amoeba
Onchocerca volvulus
River blindness from blackfly bites
Paragonimus westermani
Lung fluke from undercooked crab
Pediculus (lice)
Blood-feeding lice; body louse is a disease vector
Plasmodium falciparum
Severe/cerebral malaria species
Plasmodium species
Malaria parasite with RBC stage clue
Sarcoptes scabiei
Burrowing mite that causes scabies
Schistosoma species
Blood flukes with snail intermediate host
Strongyloides stercoralis
Threadworm with autoinfection cycle
Taenia species
Tapeworm with proglottid vocabulary
Toxocara species
Dog/cat roundworm causing larva migrans
Toxoplasma gondii
Cat-associated apicomplexan clue
Trichinella spiralis
Encysted muscle larvae from undercooked pork
Trichomonas vaginalis
Motile flagellated protozoan
Trichuris trichiura
Whipworm with barrel-shaped bipolar-plug egg
Trypanosoma brucei
Tsetse-borne cause of African sleeping sickness
Trypanosoma cruzi
Kinetoplastid protozoan with triatomine vector
Wuchereria bancrofti
Lymphatic filaria causing elephantiasis