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Published on: September 14, 2019
[Microsporidiosis: an emerging and opportunistic infection]
Abstract:
Microsporidiosis is considered as an emerging and opportunistic infection. The etiologic agents, microsporidia, are small single-celled and obligate intracellular organisms. Recently they were reclassified with the fungi. Of the 14 species currently known to infect humans, Enterocytozoon bieneusi and Encephalitozoon intestinalis are the most common. Species infecting humans have been found in wild, domestic, and food-producing farm animals, as well as in water sources, raising concerns for zoonotic, foodborne, and waterborne transmission. Chronic or self-limiting diarrhea is the most common symptom associated with microsporidiosis in immune-suppressed or immune-competent individuals. In patients with human immunodeficiency virus (HIV) infection rates up to 50% have been reported. In Venezuela, the extent of microsporidial infection and its effects on human health are unknown. In a recent study of 103 HIV-infected patients from ten different sectors of Zulia State, microsporidian infections were identified in 14 (13.6%) of them; this finding suggests that microsporidia are common among these patients and are widely distributed in the region. Therefore, it is necessary to implement the techniques to diagnose these infectious agents in the health laboratories in the country in order to prescribe the specific treatment and to study the risk factors for infection to develop preventive measures to control the spread of microsporidia.
Insights
Microsporidiosis is an emerging opportunistic infection. A study in Venezuela found microsporidia in 13.6% of HIV-infected patients, indicating widespread presence and the need for diagnostics and prevention.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Parasitology
Background:
- Microsporidia, now classified as fungi, are obligate intracellular organisms causing opportunistic infections.
- Enterocytozoon bieneusi and Encephalitozoon intestinalis are the most prevalent human-pathogenic species.
- Zoonotic, foodborne, and waterborne transmission routes are concerns due to animal and environmental reservoirs.
Discussion:
- Microsporidiosis presents as chronic or self-limiting diarrhea, particularly in immunocompromised individuals.
- Reported infection rates in HIV patients can reach up to 50%.
- The prevalence and health impact of microsporidiosis in Venezuela were previously unknown.
Key Insights:
- A study in Venezuela identified microsporidian infections in 14% of 103 HIV-infected patients.
- This finding suggests microsporidia are common and widely distributed among this population in Zulia State.
- The study highlights the need for diagnostic implementation in Venezuelan health laboratories.
Outlook:
- Implementing diagnostic techniques is crucial for timely treatment of microsporidiosis.
- Further research into risk factors is necessary for developing effective preventive strategies.
- Controlling the spread of microsporidia requires a multi-faceted approach including diagnostics and prevention.
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