Infectious Disease Compendium

Isospora beli


A protozoa, it is found in tropical areas of the world.

Epidemiologic Risks

Eating food and water contaminated with human stool. And as I have probably mentioned elsewhere, most of the food you eat has a fine patina of human stool. Has been associated with basil pesto salads.


Diarrhea, esp in AIDS patients and other immunoincompetent patients.


TMP/Sulfa qid x 10 days.


ICD9 Codes (Soon to be supplanted by ICD10)

Isosporosis 007.2.