The characteristics and transmission of some of the major protozoal infections
Start with the big picture
The topic surveys major protozoa by clinical grouping and transmission pathway. Blood and tissue examples include Plasmodium, Babesia, Toxoplasma, Leishmania, and Trypanosoma species, as well as free-living amoebae such as Naegleria and Acanthamoeba. Intestinal and urogenital organisms include Entamoeba, Giardia, Trichomonas, Cryptosporidium, Cyclospora, Isospora, and Balantidium. The source highlights distinguishing forms and routes: mosquito or tick vectors, ingestion of cysts or oocysts, sexual transmission, and entry through the nose or eye. These comparisons provide a framework for connecting protozoal characteristics with likely exposure pathways and associated disease presentations.
What you'll learn
- Distinguish blood and tissue protozoa from intestinal and urogenital protozoa.
- Identify transmission routes associated with representative medically important protozoa.
- Relate selected protozoal forms, such as cysts and trophozoites, to infection pathways.
- Compare vector-borne, food- or waterborne, sexual, and environmental exposures.
Continue your study
Work through the complete notes and reinforce the topic with the study tools available in the full lesson.
