Rickettsia Flashcards

1
Q

True/False: Rickettsia live outside cells

A

FALSE

*obligate intracellular

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2
Q

Ricketssia is mainly transmitted via ____

A

arthropods

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3
Q

What cells does the genus Anaplasma like to live in?

A

myeloid cells

neutrophils

erythrocytes

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4
Q

What are some pathological signs of Anaplasma?

A

anemia

thrombocytopenia

leukopenia

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5
Q

What species of anaplasma is the big one in livestock?

A

Anaplasma marginale

*bovine anaplasmosis

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6
Q

What anaplasma species if extremely prevalant in dogs and what cells does it live in?

A

Anaplasma platys

*lives in platelets

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7
Q

What species of Anaplasma affects dogs, horses and humans?

A

Anaplasma phagocytophilum

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8
Q

In Anaplasma marginale, livestock can be the end hosts as well as ____

A

Reservoirs

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9
Q

In anaplasma marginale, what animals is the big carrier of the vector?

A

wild deer

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10
Q

True/False: Anaplasma marginale is a reportable disease

A

True!!

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11
Q

What kind of ticks transmit Anaplasma marginale?

A

HARD TICKS

*boophilus

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12
Q

severe ____ is caused by bovine anasplasmosis

A

anemia

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13
Q

With bovine Anaplasmosis, persistant infection is the most common and causes _____

A

undulating febrile disease

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14
Q

Bovine anaplasmosis causes huge destruction to ____

A

erythrocytes

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15
Q

Where is Bovine Anaplasmosis found in erythrocytes?

A

near the periphery

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16
Q

What is the main treatment for Bovine Anaplasmosis?

A

Vaccination and VECTOR CONTROL

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17
Q

Most Rickettsia species are susceptible to what antibiotic?

A

Tetracylines

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18
Q

What cells do Anaplasma Phagocytophilum live in?

A

neutrophils!!!!

*granulocytes

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19
Q

Anaplasma phagocytophilum causes ___ borne fever

A

tick

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20
Q

Anaplasma Phagocytophilum can be co-transmitted with ___ because they are transmitted by the same tick

A

Borellia

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21
Q

What species of tick transmits Anaplasma Phagocytophilum?

A

Ixodes scapularis or pacificus

22
Q

Clinical signs of Anaplasma phygocytophilum

A

lethargic

not eating

leukopenia

23
Q

Anaplasma Platys is found in what cells?

24
Q

What does Anaplasma Platys cause in dogs?

A

Infectious canine cyclic thrombocytopenia

25
Anaplasma Platys is common co-infected with \_\_\_\_
Ehrlichia
26
What ticks transmit Anaplasma Platys?
Rhipicephalus Dermacentor
27
Genus Rickettsiae lives in ____ cells
endothelial
28
What disease does Rickettsia Rickettsii cause in dogs?
Rocky mountain spotted fever
29
What ticks transmit Rickettsia Rickettsii?
Dermacentor andersoni- Wood tick Dermacentor variablis- American dog tick
30
What is the main pathology of Rickettsia Rickettsii?
VASCULITIS!!
31
Severe ____ in extermitis in dogs occur with Ricketssia Rickettsii
necrosis
32
What is at the top of the differential wht Rickettsia Rickettsii?
Ehrlichiosis
33
Best control for Rickettsia Rickettsii?
Tick control!
34
Coxiella Burnetii, is the only one that doesn't need to be \_\_\_\_
vectored \*it can be aerosolized
35
Coxiella Burnetii has been bioweaponized and only needs ____ organism to infect host
one
36
Coxiella Burnettii caueses ___ fever, and is reportable!
Q- fever
37
Coxiella Burnettii is associted with ____ in sheep and goats
abortion
38
Ehrlichiae lives in what kind of cells?
macrophages \*white blood cells
39
Ehrlichia canis is the causative agent of what disease?
Canine Monocytic ehrlichiosis
40
Ehrlichia canis is transmitted by what species of tick?
Rhipicephalus Sanguineus- Brown dog tick
41
Ehrlichia ewingii is found in _____ cells and is transmitted by what species of tick?
neutrophils Amblyoma americanum- (lone star tick)
42
What is the causative agent of African heartwater?
Ehrlichia ruminantium \*reportable disease but not in the US
43
African heartwater is transmitted by what tick?
Amblyomma
44
African heartwater likes to dissemintate to what part of the body?
brain \*neurological signs
45
Major pathological finding in African Heartwater is \_\_\_\_
pericardial effusion \*lots of water around the heart in necropsy
46
\_\_\_\_ serve as vectors for Neorickettsia
flukes \*nematodes
47
What disease does Neorickettsia helminthoeca cause?
Salmon poisoning disease
48
Neorickettsia likes to go into the ____ tissue and causes what clinical sign?
lymph causes Hemorrhagic DIARRHEA
49
What is the only obligatory helminth borne pathogenic bacterium and what is the helminth?
Neorickettsia helminthoeca \*use Nanophyetus salmincola fluke
50
How do dogs get Neorickettsia helminthoeca?
Fluke inside the fish and the dog eats the fish
51
What is the causative agent of Potomac horse fever?
Neorickettsia Risticii
52
What is the main clinical sign of Potomac horse fever?
Diarrhea!!