Microbiology, parasitology & COVID-19

Parasites-gastrointestinal (not liver)


Last author update: 30 August 2019
Last staff update: 5 October 2020

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PubMed Search: Sarcocystis[TI] pathology free full text[sb]

Nat Pernick, M.D.
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Cite this page: Pernick N. Sarcocystis. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/parasitologysarcocystis.html. Accessed June 1st, 2023.
  • Humans serve as the definitive host for the intestinal form of sarcocystosis and shed sporulated oocysts and sarcocysts in their stool (Pritt: Creepy Dreadful Wonderful Parasites Blog - Answer to Case 530 [Accessed 30 August 2019])
  • Humans acquire S. hominis and S. suihominis by ingesting undercooked beef or pork, respectively
  • Rarely, humans may also serve as the intermediate host for some Sarcocystis species when ingesting oocysts or sporocysts in contaminated food or water
    • In this form of disease, sarcocysts form within various muscles in the body, causing transient myalgias, muscle weakness and associated edema
Clinical features
Case reports
Microscopic (histologic) description
Microscopic (histologic) images

Contributed by Bobbi Pritt, M.D. and Institute of Tropical Medicine Antwerp

Intestinal sarcocystosis: sporulated oocyst and sporocyst

Carbolfuchsin staining according to Heine

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