Common parasites that cause diarrhea in AIDS

Common parasites that cause diarrhea in AIDS

Among the protozoa, C. parvum is the most common parasite causing diarrhea in AIDS and has been identified in up to 11% of symptomatic patients. Although a cause of acute diarrhea, cryptosporidiosis is found most commonly in HIV-infected patients with chronic diarrhea. In some studies of HIV-infected patients with chronic diarrhea, microsporidia ( E. bieneusi and E. intestinalis ) are the most commonly identified pathogens. Giardia is also a consideration in patients with diarrhea, especially when chronic and associated with the upper GI symptoms of nausea and bloating. Isospora belli is a rare GI pathogen in HIV-infected patients in North America, whereas it is endemic in many developing countries, such as Haiti.


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