Hemo-coccidia

Question 1

how does disease result from hepatozoonosis

Answer 1

axesual replication of the parasite in IH

Question 2

where does hepatozoonosis replicate at in IH

Answer 2

leukocytes in bone marrow, spleen, and lesser extent liver

Question 3

what is the DH in hepatozoonosis

Answer 3

ticks

Question 4

where does sexual replication occur hepatozoonosis

Answer 4

in DH! (ticks)

Question 5

what is the IH for hepatozoonosis

Answer 5

dogs

Question 6

how are dogs infected with hepatozoonosis

Answer 6

ingestion of ticks w mature oocysts in hemocoel

Question 7

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

Answer 7

H. americanum

Question 8

dogs naturally infected with H.canis are generally

Answer 8

asymptomatic

Question 9

is there age associated immunity with H.canis

Answer 9

yes
>4-6 months appear resistant to experimental infections

Question 10

what species of tick is associated with H.canis

Answer 10

rhipicephalus sanguinensis

Question 11

where does H.canis replicate in IH

Answer 11

asexually in bone marrow

Question 12

clinical signs H.canis dogs

Answer 12

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

Question 13

H.americanum replication in IH

Answer 13

asexually in host striated muscle
elicit inflammatory response

Question 13

H.americanum species confirmed by

Answer 13

PCR sequence analysis

Question 14

dogs infected by what to get H.americanum

Answer 14

ingestion of infected amblyomma maculatum
transmission by paratenic host!

Question 15

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

Answer 15

true

Question 16

H.americanum clinical disease

Answer 16

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

Question 17

H.americanum diagnosis

Answer 17

muscle biopsy of suspected animals
serologic and PCR testing

Question 18

t/f infection of hepatozoonosis in dogs is lifelong

Answer 18

true

Question 19

how should you approach treatment of hepatozoonosis

Answer 19

control the disease, not curative

Question 20

how to prevent hepatozoonosis?

Answer 20

avoidance of tick exposure and predation of paratenic hosts

Question 21

is hepatozoonosis zoonotic?

Answer 21

NO!

Question 22

haemosporidia disease is associated with

Answer 22

axesual replication in tissues and blood cells of IH

Question 23

what is the DH of haemosporidia

Answer 23

ticks

Question 24

does sexual replication occur in DH or IH haemosporidia?

Answer 24

DH (ticks)

Question 25

how does IH get infected with haemosporidia

Answer 25

sporozoites transferred to IH by tick during obligate blood meal

Question 26

piroplasms

Answer 26

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

Question 27

babesia sp disease associated with

Answer 27

non-regenerative anemia from destruction of RBCs

Question 28

t/f there is limited asexual replication in babesia sp

Answer 28

FALSE, unlimited

Question 29

what animals are associated with theileria sp disease

Answer 29

livestock

Question 30

cytauxzoon felis disease associated with

Answer 30

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

Question 31

cytauxzoon felis is universally fatal in what species

Answer 31

domestic cats

Question 32

what are examples of vertebrae hosts babesia sp affect

Answer 32

dogs, cattle, horses, people

Question 33

how do ticks become infected with babesia sp

Answer 33

ingestion of merozoites in RBS of IH

Question 34

can transovarial transmission occur in tick with babesia sp

Answer 34

yes

Question 35

how IH infected with babesia sp

Answer 35

ticks during obligate blood meal

Question 36

what is the etiologic agent of texas cattle fever

Answer 36

bovine banesiosis

Question 37

how does texas cattle fever get transmitted

Answer 37

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

Question 38

how is texas cattle fever controlled

Answer 38

intensive dipping the "one host" tick (rhipicephalus microplus)

Question 39

what species of babesiosis can infect dogs

Answer 39

B.canis and B. gibsoni

Question 40

B.canis

Answer 40

priplasms larger and pear shaped

Question 41

B. gibsoni

Answer 41

piroplasms smaller, oval, signet ring form common

Question 42

disease in cattle clinical signs babesiosis

Answer 42

pyrexia, anemia, hemoglobinuria, icterus

Question 43

disease in dogs clinical signs babesiosis

Answer 43

pyrexia, anemia, thrombocytopenia, dysorexia, vomiting, lethargy

Question 44

diagnosis of babesiosis

Answer 44

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

Question 45

imidiocarb

Answer 45

denatures DNA in babesiosis

Question 46

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

Answer 46

true blood donor dogs should be screened for

Question 47

how to prevent babesiosis

Answer 47

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