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Protozoa > vector-borne protozoa > Flashcards

vector-borne protozoa Flashcards

1
Q

What is the vector of leishmania?

A

Phlebotomine sand fly

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2
Q

What are the forms of leishmania disease?

A

Visceral
Cutaneous
Mucocutaneous

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3
Q

What are the clinical signs of leishmania?

A 
Anorexia
Skin lesions
Ocular abnormalities
Epistaxis
Lethargy
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4
Q

What is the pathology of leishmania

A

Anaemia
Thrombocytopenia
Hyperglobinuria

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5
Q

How can leishmania be diagnosed?

A

Cytology of lymph nodes, PCR, serology

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6
Q

What is the vector for trypanosoma?

A

Tsetse fly

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7
Q

What disease is caused in cattle by trypanosoma?

A

Anaemia - trypanosoma congolese

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8
Q

What disease is caused in humans by trypanosoma?

A

Sleeping sickness

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9
Q

What is the general life cycle of babesia?

A

Sporozoites penetrate RBC.
Ingested by tick vector when taking a blood feed.
Forms zygotes in the tick gut.
Sporozoites released in tick saliva.

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10
Q

What parasite transmits babesia?

A

Ticks

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11
Q

Which species of tick transmits babesia (canis) canis?

A

Dermacentor reticulatis

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12
Q

Which species of tick transmits babesia (canis) vogeli?

A

Dermacentor reticulatis

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13
Q

Which species of tick transmits babesia gibsoni?

A

Rhipicephalus sanguineas

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14
Q

Which species of tick transmits babesia vulpes?

A

Ixodes hexagonus - little evidence though.

Possible reservoir in foxes.

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15
Q

What is the pathogenesis of babesia canis?

A

Rapid division of parasites within erythrocytes.
Haemolytic anaemia.
Splenomegaly -> enlarged spleen

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16
Q

What are the clinical signs of babesia canis infection?

A

Fever
Haemoglobinuria
Jaundice
Anaemia

17
Q

What is the vector for babesia divergens?

A

Ixodes ricinus

18
Q

What is the disease caused in cattle by babesia divergens?

A

Red water fever

19
Q

What are the clinical signs of a babesia divergens infection?

A

Depression, pyrexia, anorexia
Anaemia, haemoglobinuria, icterus
Diarrhoea or constipation

20
Q

What is the epidemiology of babesia divergens?

A

Associated with peaks of tick feeding activity.
Disease of older animals.
Enzootic stability - high challenge, low risk of disease.

21
Q

What are the risk factors associated with babesia divergens?

A

Introducing naive cattle to an infected herd.
Introducing an infected individual to a naive herd.
Number of ticks.

Protozoa (3 decks)

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