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26 Cards in this Set
- Front
- Back
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What do trematodes usually infect first?
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snails
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What is the infective stage of treamatodes?
what food is it found on? |
Metacercariae
usually on Water Chestnut |
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What stage of trematode is usually found in people
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the adult stage
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What is Fasciolopsis buski?
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this is a fluke (treamatode)
very large 7cm X 2cm |
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where does Fasciolopsis buski live in a person?
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in the small intestine wall
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What is the intermediate host of Fasciolopsis buski?
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snails
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what is the definitive/reservoir host of Fasciolopsis buski?
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pigs
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what is the diagnostic stage of Fasciolopsis buski?
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eggs in feces
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what is the clinical manifestation of Fasciolopsis buski?
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heavy infections lead to-
diarrhea enteritis EOSINOPHILIA intestinal obstruction |
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Where in the world is Fasciolopsis buski distributed?
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China, vietnam, thailand.
pig/dogs/rabbits in these places |
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What is the diganostic feature of the egg in Fasciolopsis buski?
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it has an Operculum, a flattened top that opens up
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What is the appearance of fasciola hepatic?
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this is leaf shaped
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What is fasciola hepatic found in?
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watercrests
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what is the infective stage of fasciola hepatic?
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metacercariae on WATERCRESS** different from buski
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What other reservoirs can fasciola hepatic have?
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cattle and sheep
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Where does Clonorichis Sinensis live?
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this lives in the small to medium biliary ducts
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Where does Fasciola hepatic live?
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this lives in the larger bile ducts
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What is the infective stage of Clonorichis Sinensis?
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metacercarine in freshwater fish
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what do you eat to get Clonorichis Sinensis?
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raw or undercooked fish
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What are the clinical signs of Clonorichis Sinensis?
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severe infections with- fever, epigastric pain, hepatomegaly, jaundice.
Gall bladder signs- associated with Cholangiocarcinoma ** |
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Where is Clonorichis Sinensis endemic to
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Korea, China, Taiwan, Vietnam
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where does heterophyes heterophyes live?
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in the small intestine
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what is the infective host of heterophyes heterophyes ?
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fresh/brackish water fish
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What can heterophyes heterophyes infect that is unique?
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this can cause myocarditis if eggs reach heart
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what is the first thing a trematode usually infects? (first intermediate)
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a snail
(then it goes on a food item veggie or fish, and then a person) |
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Whats the most common worm infection in the US?
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pinworms
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