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    Cyclospora cayetanensis

    Lisa Spacek, M.D., Ph.D.
    Cyclospora cayetanensis is a topic covered in the Johns Hopkins HIV Guide.

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    MICROBIOLOGY

    • Obligate intracellular coccidian parasite; infects epithelial cells of small intestine.
    • Excreted in stool as oocysts (spherical, 8-10 μm in diameter), which may be shed intermittantly and at low levels. Sporulation (maturation of oocysts) occurs outside host and takes 7-12d.
    • Transmitted by fecal-contaminated soil, food and water. Humans only known host and reservoir. Human-to-human transmission unlikely as excreted oocysts must sporulate before becoming infectious.[6]
    • Both sporadic infections and outbreaks occur. Infections tend to be seasonal with spring & summer being peak seasons in the U.S., associated with imported raspberries, mixed salad greens, and basil.[5]
    • Found in travelers to endemic areas, i.e., Peru, Nepal, Haiti, Guatemala, Indonesia.

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    Last updated: February 24, 2014

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    TY - ELEC T1 - Cyclospora cayetanensis ID - 545047 A1 - Spacek,Lisa,M.D., Ph.D. Y1 - 2014/02/24/ BT - Johns Hopkins HIV Guide UR - https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_HIV_Guide/545047/all/Cyclospora_cayetanensis DB - Johns Hopkins Guide DP - Unbound Medicine ER -