What are stool exam findings in strongyloidiasis?

Updated: Jun 20, 2019
  • Author: Pranatharthi Haran Chandrasekar, MBBS, MD; Chief Editor: Michael Stuart Bronze, MD  more...
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Strongyloides larvae are secreted in feces and excretion may be intermittent, releasing as few as 50 eggs per day. [52] This can complicate identification. Larvae are seen in stool approximately 1 month after skin penetration. Unlike the eggs of other parasitic nematodes, the eggs of S stercoralis are not usually found in the feces; instead, they embryonate within the intestine and develop into larvae, which are deposited in the soil. Ova are almost never observed during a strongyloidiasis infection unless severe diarrhea occurs; results from this examination are typically negative during acute infection.

Children with S fuelleborni infection shed eggs rather than larvae in the feces, and the infection is easily diagnosed using microscopic techniques.

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