Microbiology Fungi & Protozoan Digestive System Diseases

Digestive system diseases (4)

- Giardiasis

- Amebiasis

- Cyclosporiasis

- Cryptosporidiosis

Giardiasis protozoan infection

Giardia duodenalis (intestinalis or lamblia)

Giardiasis transmission (2)

- Ingestion of cysts of organisms

- Contaminated water (not killed in chlorination)

Giardiasis abilities

- Mature to trophozoite in small intestine

- adhere to bowel wall via adhesive (sucker) disk

- severe diarrhea w/dehydration; interrupt adsorption

Amebiasis (amebic dysentery) protozoan infection

entamoeba hystolytica

Amebiasis (amebic dysentery) transmission (2)

- Ingestions of cysts

- contaminated water (not killed by chlorination)

Amebiasis (amebic dysentery) abilities (2)

- mature to trophozoites in the colon

- invade intestinal mucosa & enter bloodstream

Amebiasis (amebic dysentery) effect on intenstines

- damage intestinal lining -> fecal matter enters body cavity -> cause peritonitis

Cyclosporiasis protozoan infection

cyclospora cayetanensis

Cyclosporiasis transmission (3)

- ingestion of oocytes

- contaminated water

- on food (berries)

Cryptosporidiosis protozoan infections (2)

- c. hominis

- c. parvum

(cryptosporidium)

Cryptosporidiosis transmission

- oocysts ingestion

- contaminated water

Cryptosporidiosis abilities (2)

- mature into sporozoites in small intestine

- fatal diarrhea in immunodeficient ppl

Diseases found in contaminated water (4)

(all of them)

- Giardiasis

- Amebiasis

- Cyclosporiasis

- Cryptosporidiosis