Isospora belli: A Hidden Intestinal Parasite
- Jul 13, 2025
- 4 min read
Updated: Feb 2

Isospora belli is a microscopic coccidian parasite that infects the intestinal lining of humans. Though relatively rare in industrialized nations, it can cause serious illness, especially in individuals with weakened immune systems, such as those with HIV/AIDS or undergoing chemotherapy. Found primarily in tropical and subtropical regions, this parasite is a significant concern in areas with poor sanitation and contaminated water supplies.
Cause and Transmission



