Sarcocystosis is caused by an intracellular protozoa.
Parasite: Sarcocystis species (S. cruzi, S, hominis, others)
Life-cycle: 2-host (prey and predator) life cycle (encysted forms in endothelial cells and skeletal muscle of pigs, cattle or sheep; oocysts or sporocysts shed in the feces of a predator or omnivore)
Source in humans: eating raw or undercooked meat
Onset: 3-6 hours after ingestion
Clinical symptoms:
(1) nausea and vomiting
(2) anorexia and loss of appetite
(3) stomach ache and vague abdominal pains
(4) abdominal bloating
(5) diarrhea
(6) dyspnea
(7) tachycardia
Laboratory findings: fecal oocysts or sporocysts (appear 5-18 days after exposure). Multiple fecal specimens may need to be examined.
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