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Strongyloides stercoralis

Strongyloides stercoralis is a topic covered in the Johns Hopkins ABX Guide.

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  • Helminthic parasite, common worldwide but especially in warmer climes.
    • S. stercoralis is the major pathogen.
    • S. fuelleborni occasional human pathogen, described in Papua New Guinea and Africa.
  • Larvae live in soil. Human infection by contact with contaminated soil.
  • Filariform larvae penetrate skin and enter lymphatics → lung alveoli.
    • Migration from lung to trachea to GI tract/small intestine.
    • Females yield to parthenogenic reproduction with eggs that turn to rhabditiform larvae within the intestine.
    • Cycle yields long-term infection in humans (years-decades, may be considered lifelong).
  • Immunosuppression can yield increased organisms by result of auto-infection → hyperinfection [see life cycle Fig. 1], a potentially fatal condition.
  • Larvae are typically seen ~1 month after exposure.

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Last updated: May 30, 2016


Auwaerter, Paul G. "Strongyloides Stercoralis." Johns Hopkins ABX Guide, The Johns Hopkins University, 2016. Pediatrics Central, peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540527/all/Strongyloides_stercoralis.
Auwaerter PG. Strongyloides stercoralis. Johns Hopkins ABX Guide. The Johns Hopkins University; 2016. https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540527/all/Strongyloides_stercoralis. Accessed March 19, 2019.
Auwaerter, P. G. (2016). Strongyloides stercoralis. In Johns Hopkins ABX Guide. Available from https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540527/all/Strongyloides_stercoralis
Auwaerter PG. Strongyloides Stercoralis [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2016. [cited 2019 March 19]. Available from: https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540527/all/Strongyloides_stercoralis.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Strongyloides stercoralis ID - 540527 A1 - Auwaerter,Paul,M.D. Y1 - 2016/05/30/ BT - Johns Hopkins ABX Guide UR - https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540527/all/Strongyloides_stercoralis PB - The Johns Hopkins University DB - Pediatrics Central DP - Unbound Medicine ER -