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MY Bacteriology FINAL > Rickettsia > Flashcards

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?

A

Platelets

24
Q

What does Anaplasma Platys cause in dogs?

A

Infectious canine cyclic thrombocytopenia

25
Q

Anaplasma Platys is common co-infected with ____

A

Ehrlichia

26
Q

What ticks transmit Anaplasma Platys?

A

Rhipicephalus

Dermacentor

27
Q

Genus Rickettsiae lives in ____ cells

A

endothelial

28
Q

What disease does Rickettsia Rickettsii cause in dogs?

A

Rocky mountain spotted fever

29
Q

What ticks transmit Rickettsia Rickettsii?

A

Dermacentor andersoni- Wood tick

Dermacentor variablis- American dog tick

30
Q

What is the main pathology of Rickettsia Rickettsii?

A

VASCULITIS!!

31
Q

Severe ____ in extermitis in dogs occur with Ricketssia Rickettsii

A

necrosis

32
Q

What is at the top of the differential wht Rickettsia Rickettsii?

A

Ehrlichiosis

33
Q

Best control for Rickettsia Rickettsii?

A

Tick control!

34
Q

Coxiella Burnetii, is the only one that doesn’t need to be ____

A

vectored

*it can be aerosolized

35
Q

Coxiella Burnetii has been bioweaponized and only needs ____ organism to infect host

A

one

36
Q

Coxiella Burnettii caueses ___ fever, and is reportable!

A

Q- fever

37
Q

Coxiella Burnettii is associted with ____ in sheep and goats

A

abortion

38
Q

Ehrlichiae lives in what kind of cells?

A

macrophages

*white blood cells

39
Q

Ehrlichia canis is the causative agent of what disease?

A

Canine Monocytic ehrlichiosis

40
Q

Ehrlichia canis is transmitted by what species of tick?

A

Rhipicephalus Sanguineus- Brown dog tick

41
Q

Ehrlichia ewingii is found in _____ cells and is transmitted by what species of tick?

A

neutrophils

Amblyoma americanum- (lone star tick)

42
Q

What is the causative agent of African heartwater?

A

Ehrlichia ruminantium

*reportable disease but not in the US

43
Q

African heartwater is transmitted by what tick?

A

Amblyomma

44
Q

African heartwater likes to dissemintate to what part of the body?

A

brain

*neurological signs

45
Q

Major pathological finding in African Heartwater is ____

A

pericardial effusion

*lots of water around the heart in necropsy

46
Q

____ serve as vectors for Neorickettsia

A

flukes

*nematodes

47
Q

What disease does Neorickettsia helminthoeca cause?

A

Salmon poisoning disease

48
Q

Neorickettsia likes to go into the ____ tissue and causes what clinical sign?

A

lymph

causes Hemorrhagic DIARRHEA

49
Q

What is the only obligatory helminth borne pathogenic bacterium and what is the helminth?

A

Neorickettsia helminthoeca

*use Nanophyetus salmincola fluke

50
Q

How do dogs get Neorickettsia helminthoeca?

A

Fluke inside the fish and the dog eats the fish

51
Q

What is the causative agent of Potomac horse fever?

A

Neorickettsia Risticii

52
Q

What is the main clinical sign of Potomac horse fever?

A

Diarrhea!!

MY Bacteriology FINAL (16 decks)

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