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Cystoisospora is a topic covered in the Johns Hopkins HIV Guide.

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  • Coccidian protozoal parasite; mature oocysts (30 x 15 μm) sporulate outside host.
  • Sporulated oocysts are infective, sporozoites penetrate enterocytes of small intestine and develop into trophozoites.
  • Transmission occurs by ingestion of contaminated water and food.[3]
  • Endemic in Central and S. America, Africa, and S.E. Asia; in U.S. associated with immunosuppression.
  • Self-limited infection in immunocompetent host.

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Last updated: April 5, 2018


Spacek, Lisa A. "Cystoisospora." Johns Hopkins HIV Guide, 2018. Johns Hopkins Guide, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545111/all/Cystoisospora.
Spacek LA. Cystoisospora. Johns Hopkins HIV Guide. 2018. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545111/all/Cystoisospora. Accessed July 19, 2019.
Spacek, L. A. (2018). Cystoisospora. In Johns Hopkins HIV Guide. Available from https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545111/all/Cystoisospora
Spacek LA. Cystoisospora [Internet]. In: Johns Hopkins HIV Guide. ; 2018. [cited 2019 July 19]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545111/all/Cystoisospora.
* Article titles in AMA citation format should be in sentence-case
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