Term
What is filariasis?
Sx:
Diagnostic:
Infection: |
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Definition
Group of tropical diseases caused by:
Brugia malayi and Wuchereria bancrofti
>Sx: fever, chills, H/A, skin lesions, elephantiasis
>Dx: inguinal lymph node inflammation is diagnostic (Brugia malayi)
>infection: microfilaria deveoped in mosquito is injected into humans |
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Term
Loa loa
Vector
Pathogenicity
Key |
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Definition
Vector: horse fly, deer fly
Pathogenicity: adults in subcutaneous tissues or conjunctiva of eye
Key: Calabar swelling (noticeable swelling often seen in SQ worms which elicit immune response. |
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Term
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Definition
>Found where Wuchereria bancrofti, Loa loa, and Onchocera also occur
>No periodocity |
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Term
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Definition
"river blindness"
>Pathogenicity: microfilaria are in the skin from flies, causes blindness, onchocercal nodules on boney prominences.
>Vector: blackfly
>Dx: Bx of skin (snip) in saline viewed under microscope |
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Term
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Definition
"heartworm"
>Vector: mosquito
>Pathogenicity: adults live in the heart of dogs. Human infection is rare. |
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Term
Dracunculus medinensis
Infection
Sx:
Pathogenicity
Tx |
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Definition
"guinea worm"
>Infection: ingest infected copepods
>Sx: during release of larva, nausea, hives, breathlessness
>Pathogenicity: females migrate to the skin of lower limbs to release eggs when skin contacts water.
>Tx: use stick and slowly twist around worm over several weeks to remove |
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Term
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Definition
threadlike round worms in Family Filarioidea
>Adult pre-larval stage is called microfilariae which circulate in lymph tissue |
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Term
Wuchereria bancrofti
Brugia malayi
Vector
Pathogenicity
Dx |
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Definition
"elephantiasis"
>Vector: mosquito
>Pathogenicity: microfilariae mature into adults in lymphatic vessels, lymphadenopathy, repeated exposures forms fibrous tissues and enlarges limbs
>Dx: draw blood at night to see microfilariae |
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