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Parasit E5 > Hemo-coccidia > Flashcards

Hemo-coccidia Flashcards

1
Q

how does disease result from hepatozoonosis

A

axesual replication of the parasite in IH

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2
Q

where does hepatozoonosis replicate at in IH

A

leukocytes in bone marrow, spleen, and lesser extent liver

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3
Q

what is the DH in hepatozoonosis

A

ticks

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4
Q

where does sexual replication occur hepatozoonosis

A

in DH! (ticks)

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5
Q

what is the IH for hepatozoonosis

A

dogs

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6
Q

how are dogs infected with hepatozoonosis

A

ingestion of ticks w mature oocysts in hemocoel

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7
Q

which infection is more severe H. canis or H. americanum

A

H. americanum

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8
Q

dogs naturally infected with H.canis are generally

A

asymptomatic

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9
Q

is there age associated immunity with H.canis

A

yes
>4-6 months appear resistant to experimental infections

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10
Q

what species of tick is associated with H.canis

A

rhipicephalus sanguinensis

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11
Q

where does H.canis replicate in IH

A

asexually in bone marrow

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12
Q

clinical signs H.canis dogs

A

transient fever, skeletal pain, recumbency
low levels of parasitemia in blood

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13
Q

H.americanum replication in IH

A

asexually in host striated muscle
elicit inflammatory response

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13
Q

H.americanum species confirmed by

A

PCR sequence analysis

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14
Q

dogs infected by what to get H.americanum

A

ingestion of infected amblyomma maculatum
transmission by paratenic host!

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15
Q

t/f for H.americanum developing organisms (merogony) are protected from host immunity while in cyst

A

true

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16
Q

H.americanum clinical disease

A

fever, lethargy, neutophilic leukoctosis, non-regenerative anemia, muscle weakness, atrophy of head muscles

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17
Q

H.americanum diagnosis

A

muscle biopsy of suspected animals
serologic and PCR testing

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18
Q

t/f infection of hepatozoonosis in dogs is lifelong

A

true

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19
Q

how should you approach treatment of hepatozoonosis

A

control the disease, not curative

20
Q

how to prevent hepatozoonosis?

A

avoidance of tick exposure and predation of paratenic hosts

21
Q

is hepatozoonosis zoonotic?

A

NO!

22
Q

haemosporidia disease is associated with

A

axesual replication in tissues and blood cells of IH

23
Q

what is the DH of haemosporidia

A

ticks

24
Q

does sexual replication occur in DH or IH haemosporidia?

A

DH (ticks)

25
Q

how does IH get infected with haemosporidia

A

sporozoites transferred to IH by tick during obligate blood meal

26
Q

piroplasms

A

pyriform/round/ rod-shaped parasite stages seen in blood

27
Q

babesia sp disease associated with

A

non-regenerative anemia from destruction of RBCs

28
Q

t/f there is limited asexual replication in babesia sp

A

FALSE, unlimited

29
Q

what animals are associated with theileria sp disease

A

livestock

30
Q

cytauxzoon felis disease associated with

A

asexual replication in macrophages in spleen and hepatic tissues
clog blood vessels and obstruct blood flow

31
Q

cytauxzoon felis is universally fatal in what species

A

domestic cats

32
Q

what are examples of vertebrae hosts babesia sp affect

A

dogs, cattle, horses, people

33
Q

how do ticks become infected with babesia sp

A

ingestion of merozoites in RBS of IH

34
Q

can transovarial transmission occur in tick with babesia sp

A

yes

35
Q

how IH infected with babesia sp

A

ticks during obligate blood meal

36
Q

what is the etiologic agent of texas cattle fever

A

bovine banesiosis

37
Q

how does texas cattle fever get transmitted

A

transovarial transmission to tick offspring allow for one host ticks to transmit disease

38
Q

how is texas cattle fever controlled

A

intensive dipping the “one host” tick (rhipicephalus microplus)

39
Q

what species of babesiosis can infect dogs

A

B.canis and B. gibsoni

40
Q

B.canis

A

priplasms larger and pear shaped

41
Q

B. gibsoni

A

piroplasms smaller, oval, signet ring form common

42
Q

disease in cattle clinical signs babesiosis

A

pyrexia, anemia, hemoglobinuria, icterus

43
Q

disease in dogs clinical signs babesiosis

A

pyrexia, anemia, thrombocytopenia, dysorexia, vomiting, lethargy

44
Q

diagnosis of babesiosis

A

piroplasms in blood smeat
serology in IgG Ab
PCR testing and matching gene sequence data

45
Q

imidiocarb

A

denatures DNA in babesiosis

46
Q

t/f infected animals with babesiosis should be considered asymptomatic carriers for life

A

true
blood donor dogs should be screened for

47
Q

how to prevent babesiosis

A

tick control products
timely tick removal
avoid contact fighting with known carriers

Parasit E5 (5 decks)

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