Paragonimus westermani Flashcards
1
Q
Is Paragonimus westermani a food-borne zoonosis?
A
Yes!!
2
Q
What are the definitive hosts for Paragonimus westermani?
A
- Humans
- Dogs
- Cats
- other Carnivores
3
Q
What are the intermediate hosts for Paragonimus westermani??
A
Primary: snail
Secondary: crab/shrimp
4
Q
What is the geographical distribution for Paragonimus westermani?
A
- Thailand
- Japan
- China
- Philippines
- South Korea
5
Q
How is Paragonimus westermani transmitted?
A
- to host by eating raw crab meat with metacercaria, to snails by infected feces in water
6
Q
What is the Paragonimus westermani life cycle?
A
- Trematode life cycle
- Host excretes feces containing miracidia with eggs (from adult fluke)
- Eventually, snail sheds cercaria which infects crabs.
- Cercaria become metacercaria in crabs, which infects definitive host when ingestion of raw crab meat occurs.
- Metacercaria migrate to the lungs where they are encapsulated.
- A fistula to the bronchioles facilitates egg excretion
7
Q
What are the clinical symptoms produced by Paragonimus westermani?
A
Cough producing blood-stained sputum
8
Q
How would one diagnose Paragonimus westermani?
A
- Identifying eggs in sputum or feces
- X-ray
9
Q
What is the treatment for Paragonimus westermani?
A
Praziquantel
