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Echinococcus

Paul G. Auwaerter, M.D.
Echinococcus is a topic covered in the Johns Hopkins ABX Guide.

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MICROBIOLOGY

  • Zoonotic cestode parasite: two major forms
    • Echinococcus granulosus: most common, cause of cystic echinococcosis (CE).
      • Intermediate hosts: sheep, cattle, pigs, camels, goats
      • Definitive hosts: dogs and other canids that eat internal organs of intermediate host.
        • Humans infected by ingestion of eggs indirectly from canid feces via environmental contamination of food/water.
    • E. multilocularis: less common, cause of alveolar (tumor-like) echinococcosis (AE).
      • Intermediate hosts: rodents, domestic pigs, wild boars, dog, monkeys
      • Definitive hosts: foxes, dogs, cats
      • Most cases described in Europe, Asia. Three cases described in North America.
    • Echinococcus vogeli (very rare): rodents intermediate host, while bush dogs definitive host in central, south America.
    • E. oligarthus (rare)
  • Larval forms (metacestodes) infectious to humans. Organism growth in host is extremely slow, hence often asymptomatic x many years.

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Last updated: April 4, 2016

Citation

Auwaerter, Paul G. "Echinococcus." Johns Hopkins ABX Guide, The Johns Hopkins University, 2016. Pediatrics Central, peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540181/all/Echinococcus.
Auwaerter PG. Echinococcus. Johns Hopkins ABX Guide. The Johns Hopkins University; 2016. https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540181/all/Echinococcus. Accessed April 24, 2019.
Auwaerter, P. G. (2016). Echinococcus. In Johns Hopkins ABX Guide. Available from https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540181/all/Echinococcus
Auwaerter PG. Echinococcus [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2016. [cited 2019 April 24]. Available from: https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540181/all/Echinococcus.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Echinococcus ID - 540181 A1 - Auwaerter,Paul,M.D. Y1 - 2016/04/04/ BT - Johns Hopkins ABX Guide UR - https://peds.unboundmedicine.com/pedscentral/view/Johns_Hopkins_ABX_Guide/540181/all/Echinococcus PB - The Johns Hopkins University DB - Pediatrics Central DP - Unbound Medicine ER -