Related Experiment Video
Updated: Jul 10, 2026

05:31
Studying Cryptosporidium Infection in 3D Tissue-derived Human Organoid Culture Systems by Microinjection
Published on: September 14, 2019
Six human cyclosporiasis: with general review.
Patrice Bourée1, Aurelia Lancon, Francine Bisaro
1Department of Parasitology, Bicetre Hospital, AP-HP, Paris XI University, France. patrice.bouree@bct.aphp.fr
Journal of the Egyptian Society of Parasitology
|November 8, 2007
Summary
Cyclospora cayetanensis causes cyclosporiasis, an emerging infectious diarrhea. Trimethoprim-sulfamethoxazole effectively treats this parasitic infection, often acquired through contaminated food or water during travel.
Area of Science:
- Medical Parasitology
- Infectious Diseases
- Epidemiology
Background:
- Cyclospora cayetanensis is an emerging coccidian parasite increasingly recognized as a human pathogen.
- While known in animals, its clinical significance in humans has become apparent in the last two decades.
- Cyclosporiasis presents diagnostic and therapeutic challenges, particularly in travelers returning from endemic regions.
Observation:
- A retrospective study analyzed 6 patients (24-67 years) presenting with diarrhea and weight loss post-travel.
- All patients were infected exclusively by Cyclospora cayetanensis after returning from Asian countries and Madagascar.
- Diarrhea was the predominant symptom, with transmission likely occurring via the oro-fecal route or contaminated food/water.
Findings:
- Diagnosis was confirmed by identifying Cyclospora cayetanensis in stool samples.
- Trimethoprim-sulfamethoxazole (TMZ) demonstrated high efficacy in treating cyclosporiasis.
- TMZ emerged as a preferred treatment, potentially supplanting Ciprofloxacin.
Implications:
- Cyclospora should be considered in unexplained prolonged diarrhea, especially in travelers with negative initial stool analyses.
- Effective prophylaxis involves controlling water supply and food safety measures.
- This study highlights the importance of recognizing and managing Cyclospora infections in clinical practice.
Related Concept Videos
Fungal Phylum Microsporidia
Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
Toxoplasmosis
Toxoplasmosis, a zoonotic disease caused by the protozoan Toxoplasma gondii, poses significant public health challenges globally due to its high seroprevalence and varied clinical manifestations. As an obligate intracellular parasite, T. gondii can infect all warm-blooded vertebrates, but felids are its only definitive hosts, shedding unsporulated oocysts into the environment. Humans typically acquire the infection through ingestion of tissue cysts in undercooked meat or oocysts from...
Amebiasis
Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...
Diversity of Protists II
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
Chronic Bowel Disorders: Introduction
Chronic bowel diseases are a group of long-term conditions affecting the digestive tract, characterized by inflammation and damage to the gut lining. These conditions primarily include irritable bowel syndrome and inflammatory bowel disease.
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
Irritable Bowel Syndrome (IBS) is a common disorder affecting the gastrointestinal tract. The distinctive feature is recurrent abdominal pain associated with altered bowel movements, manifesting as constipation, diarrhea, or fluctuating between both. The...
Giardiasis
Giardiasis is a globally prevalent intestinal infection caused by the protozoan parasite Giardia duodenalis (also known as G. lamblia or G. intestinalis). This flagellated protozoan is the most frequently identified intestinal parasite in the United States and worldwide. Transmission primarily occurs via the fecal-oral route, with infection arising from ingestion of water or food contaminated with cysts. Individuals in low-resource settings, international travelers, outdoor enthusiasts, daycare...