ID Final Pt 3 Protozoans Flashcards
(21 cards)
2 general types of organisms classified as Parasites
Protozoa and Worms (Helminths and Arthropods)
What protozoan is prevalent in the US?
Giardia trophozoite
Patient has nonbloody diarrhea, intestinal pain, cramps, and weight loss
Giardiasis caused by Giardia lamblia
What causes Trichomoniasis?
Trichomonas vaginalis.
What protozoan is transmitted by Sand fly bites in Central & South America? What’s the disease name?
Leishmania. Leishmaniasis
What protozoan is transmitted by tse tse flies in Africa, and by Reduviid bugs in America?
Trypanosoma
Trophozoites & cysts in stools and serology.
Entamoeba histolytica
Oral-fecal spread via cysts in water and food; person to person contact.
Entamoeba histolytica
How is Entamoeba histolytica diagnosed and spread?
Diag. Trophozoites & cysts in stools and serology.
Spread: Oral-fecal spread via cysts in water and food; person to person contact
What causes Meningoencephalitis (2)?
Acanthamoeba & Naegleria (both are amoebae)
How are Acanthamoeba & Naegleria transmitted?
Acquired when swimming in freshwater ponds and lakes during a “bloom”
How is Trichomonas vaginalis usually transmitted?
Sexually
What protozoan causes Dysentary/diarrhea?
Balantidium coli
What does Balantidium coli do?
Causes Dysentary/diarrhea
What protozoan causes a serious disease in immunocompromised and newborns?
Toxoplasma gondii
Sure there are 3 bacteria that cause Malaria, but what protozoan causes Malaria?
Plasmodium
What disease does Plasmodium cause? How is it spread (2)?
Malaria. Spread is bloodborne and vector is Anopheles mosquito
Toxoplasma is spread by
cat feces
Name disease/protozoan: nausea, cramps, diarrhea, esp. immunocompromised & AIDS
Cryptosporidiosis. Cryptosporidium
What does Crytptosporidium parvum cause?
Cryptosporidiosis, which is an intestinal disease. Cramps, diarrhea, esp in AIDS and immunocompromised.
Name the malarial organism that has the greatest mortality
Plasmodium falciparum
