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18 Cards in this Set
- Front
- Back
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How many host parasites often have a phase in the muscle?
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two host parasites
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What is the most efficient way to kill parasites in meat?
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cook thoroughly
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What are the three parasites found in pork meat?
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toxoplasma
trichinella taenia solium |
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What is the natural cycle of toxoplasma?
How are food animals infected? Humans? |
Cat/rodent
ingestion of cat feces ingestion of meat or feces of infected animals |
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Who are most at risk for toxoplasma?
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immunocompromised and pregnant indiviuals
most commonly see in pork in the US |
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What is trichinella? How long do you need to freeze meat to kill trichinella? What stage is found in the meat?
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A nematode
more than 3 days larval |
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What is the natural cycle for tapeworms? What role do humans play? Food animals?
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human/food animal
definitive host intermediate host |
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What tapeworm is the most dangerous to humans? What are the two ways humans can get this infection?
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taemia solium
ingestion of cystercercoids in meat or from ingestion of eggs from feces |
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What method of transmission of Taenia solium causes neurological signs? What is this called?
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ingestion of humans feces
neurocysticercosis |
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What species of tapeworm causes measley beef? if feedlot cattle are infected, how is this controlled?
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taenia saginata
deworm humans |
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What is the name of the intestinal infection caused by adult tapeworms?
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Taeniasis
Ingestion of cysticercoids in meat |
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What is the name of the tissue infection of tapeworms?
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cystercercosis
ingestion of eggs |
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What three parasites require a few days in the environment to become infective? Which two are infective immediately?
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Nematodes, cestodes and toxoplasma
Giardia and Crypto |
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Which two parasites have environmentally stable oocysts? Which is more transmissible in water? How must these be killed?
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Giardia and crypto
Crypto Filter or boil |
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Is meat infected with echinococcus infective to humans? Eggs in canid feces?
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No
Yes |
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Who are the definitive hosts of fasciola? What is the intermediate host? How are humans infected?
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Sheep and cattle
Snail Ingestion of infected vegetation, not from liver |
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Toxocara are what type of parasites? What can they cause in humans?
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Roundworms
Larval migrans |
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What is the human roundworm?
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Ascaris lumbricoides
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