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[Parasitic infection in immunocompromised patients]
1Laboratoire de parasitologie-mycologie, hôpital Saint-Louis, 75475 Paris. francis.derouin@sls.aphp.fr
La Revue Du Praticien
|April 17, 2007
Summary
Immunocompromised patients, especially those with advanced HIV/AIDS, face severe parasitic infections from protozoa and Strongyloides stercoralis. Prevention strategies and immune reconstitution are key to managing these opportunistic infections.
Area of Science:
- Medical Parasitology
- Immunology
Context:
- Immunocompromised individuals, particularly those with T-cell deficiencies like in AIDS (CD4 counts < 200/mm3), are susceptible to life-threatening parasitic infections.
- Opportunistic parasitic infections can arise from reactivation of latent infections or primary infections that are more severe due to immune defects.
Purpose:
- To review the spectrum of severe parasitic infections in immunocompromised hosts.
- To highlight key parasites, including protozoa (Toxoplasma, Cryptosporidium, Microsporidia, Cyclospora, Isospora, Leishmania) and the helminth Strongyloides stercoralis.
- To discuss preventative measures and the role of immune reconstitution in managing these infections.
Summary:
- Intracellular protozoa are common causes of opportunistic infections, leading to conditions like toxoplasmosis and severe chronic diarrhea (Cryptosporidium, Microsporidia, Cyclospora, Isospora).
- Visceral leishmaniasis and disseminated Strongyloides stercoralis infections represent other significant parasitic threats in this population.
- Effective prevention includes specific chemoprophylaxis and, notably, immune reconstitution therapy, particularly in the context of HIV infection.
Impact:
- Understanding these risks informs clinical management and public health strategies for immunocompromised patients.
- Highlights the importance of targeted prophylaxis and the therapeutic benefits of restoring immune function.
- Emphasizes the need for vigilance regarding parasitic infections in vulnerable patient groups.
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