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18 Cards in this Set
- Front
- Back
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Agent of American trypanosomiasis
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Trypanosoma cruzi
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Agent of canine visceral leishmaniasis in the US
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Leishmania infantum
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What Order are these protozoa part of?
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Order Kinetoplastida
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How are they transmitted?
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Vectored by insects and different stages are present in dogs and in insects
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Life stages and where they are found
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Promastigotes (Leishmania only)--stages transmitted by the vector
Amastigotes--host cells in tissue Trypomastigotes--in blood and in insect vector |
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What insect carries T. cruzi in the US?
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Triatomid bugs
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Lesions in the tissue are due to __________ causing tissue damage
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amastigotes
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How is T. cruzi diagnosed?
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Trypomastigotes in blood smear
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Is T. cruzi zoonotic?
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Yes
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Is Leishmania zoonotic?
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Yes in many areas of the world
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What is the major reservoir for visceral Leishmaniasis?
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Dogs
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Dogs are major reservoir for what specific species of Leishmania?
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L. infantum
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How is Leishmania transmitted?
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Promastigotes in sand fly pharynx and are inoculated when fly bites; More likely to be via blood transfusions in the US (amastigotes in blood)
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Clinical signs of L. infantum
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Skin lesions, weight loss, lymphadenopathy, ocular lesions, nose bleed, lameness, anemia, renal failure, diarrhea (foxhounds?)
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Available treatment?
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Vaccines are used in Brazil and France
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Diagnosis of L. infantum
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IFA test
Amastigotes in smear rK39 dip stick test |
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Are relapses common with Leishmania?
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Yes relapses are common in dogs even those who have been treated
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How do we prevent infections in humans?
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Dog control
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