Capillaria Philippinensis
RONALYN AROGANTE ASANTOR
Created on March 25, 2021
The nematode (roundworm) Capillaria (=Paracapillaria) philippinensis causes human intestinal capillariasis. Unlike C. hepatica, humans are most likely the main definitive host. Transmission occurs primarily through eating undercooked fish.
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Transcript
Capillaria philippinensis
Capillariasis is a parasitic disease in humans caused by two different species of capillarids: Capillaria hepatica and Capillaria philippinensis. C. hepatica is transferred through the fecal matter of infected animals and can lead to hepatitis. C. philippinensis is transferred through ingesting infected small freshwater fish and can lead to diarrhea and emaciation.
History & Structure
It become embryonated in the external environment in 5—10 days
Ingestion of raw or undercooked fish results in infection of the human host.
The adults of Capillaria philippinensis are very small (males: 2.3 to 3.2mm; females: 2.5 to 4.3 mm) and reside in the human small intestine, where they burrow in the mucosa
In addition to the unembryonated, shelled eggs which pass into the environment, the females can also produce eggs lacking shells (possessing only a vitelline membrane)
which become embryonated within the female’s uterus or in the intestine. The released larvae can re-invade the intestinal mucosa and cause internal autoinfection
after ingestion by freshwater fish, larvae hatch, penetrate the intestine, and migrate to the tissues
Centers for DIsease Control and Prevention
life cycle
Typically, unembryonated, thick-shelled eggs are passed in the human stool image
- Capillaria philippinensis or Pudoc worm
- Discovered in 1963 in Pudoc West Village
- Transmission occurs primarily through eating undercooked fish
- Ova
- Size: 36-45 um x 20 um
- Peanut shaped
- Double walled
- Striated
- Has Bipolar Plugs
- Adult
- Delicate tiny worms
- Male have chitinized spicules
This process may lead to hyperinfection (a massive number of adult worms).
By: Ronalyn Asantor
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Genially. (2014, June 10). Genially. Retrieved June 15, 2020, from https://www.genial.ly
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