Term
enterobius vermicularis
epidemiology |
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Definition
| most common helminth infection in US |
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Term
Enterobius vermicularis
transmission |
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Definition
Ingestion of eggs
retroinfection occurs when eggs hatch and juvenile worms crawl back into anus |
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Term
trichuris trichuria
transmission |
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Definition
| ingestion of eggs from contaminated soil or water |
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Term
ascaris lumbricoides
transmission |
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Definition
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Term
ascaris lumbricoides
life cycle |
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Definition
Adults in small intestine
eggs passed in feces
eggs ingested
juveniles penetrate intestines and go to lungs
3rd stage juveniles are coughed up and swallowed |
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Term
ancylosotma duodenale
necator americanus
transmission |
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Definition
| larval penetration through skin |
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Term
ancylosotma duodenale
necator americanus
life cycle |
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Definition
adults in small intestine
eggs passed in feces
eggs hatch in soil
juveniles penetrate skin and migrate to lungs
juveniles in lungs coughed up and swallowed to small intestine |
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Term
strongyloides stercoralis
transmission |
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Definition
| larval penetration through skin and autoinfection |
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Term
trichinella spiralis
transmission |
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Definition
| ingestion of larvae from undercooked meat (often pork) |
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Term
wuchereria bancrofti
brugia malayi
transmission |
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Definition
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Term
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Definition
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Term
onchocerca volvulus
transmission |
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Definition
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Term
dracunuculus medinensis
transmission |
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Definition
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Term
toxocara canis
transmission |
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Definition
ingest eggs
cannot reproduce in humans |
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