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Sem 3: BacT > Burkholderia, Taylorella, Francisella - Gutierrez > Flashcards

Burkholderia, Taylorella, Francisella - Gutierrez Flashcards

1
Q

Burkholderia ________ is host restricted to equids

A

mallei

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2
Q

Can B.mallei survive in the environment?

A

No

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3
Q

B. mallei survives and replicates within ___________

A

macrophages

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4
Q

B. mallei resulting in pulmonary and nasal forms is known as _________

A

Glanders

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5
Q

the skin form of B. mallei is known as _______

A

Farcy

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6
Q

What is the biological vector that transmits B. mallei from host to host?

A

House flies

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7
Q

Natural infections of B. mallei are reported in:

A
  • Horses
  • Dogs
  • Cats
  • Shoats
  • Camels
  • Guinea pigs/ hamsters
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8
Q

Which animal species are resistant to B. mallei?

A
  1. Cattle
  2. Birds
  3. Rats
  4. Pigs
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9
Q

What is “strauss reaction” ?

A

male guinea pigs inoculated within the peritoneum with the cultures of B. mallei

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10
Q

Intradermal Mallein test can be used to diagnose _________

A

Burkholderia mallei

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11
Q

How to proceed if an animal tests positive on a Mallein test?

A

Animals must be culled if positive for B. mallei on Mallein test

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12
Q

Which Burkholderia spp is a saprophyte?

A

B. pseudomallei

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13
Q

Which of the following is motile: B. mallei or B. pseudomallei

A

B. pseudomallei is motile

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14
Q

Which bacteria spp causes Whitmore disease?

A

B. pseudomallei

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15
Q

Reservoir for B. pseudomallei?

A

Rodents

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16
Q

What bacteria spp causes red eye disease in cats?

A

B. pseudomallei

17
Q

B. pseudomallei causes abortion only in ________

A

Sheep

18
Q

Clinical diagnosis of __________ is difficult due to the multitude of CS and syndrome

A

B. pseudomallei

19
Q

What does B. pseudomallei look like on culture? What culture media is used?

A

Flat, wrinkled purple colonies on Ashdown’s medium

20
Q

Melieidosis is caused be __________ spp

A

B. pseudomallei

21
Q

Differences between melieidosis vs glanders?

A

-Melioidosis affects a wide host range

-Meliodosis is a saprophyte

-Prevalance is unaffected by elimination of infected animals

^^ all characteristic of B. pseudomallei

22
Q

Most virulent Francisella spp?

A

F. tularensis subsp. tularensis (Type A)

23
Q

Who can be infected with Francisella tularensis?

A

Wide range of hosts!!

24
Q

How is Francisella tularensis transmitted?

A
  1. Direct contact
  2. Aerosols
  3. Ingestion (contaminated water or food)
  4. Biting insects/ticks
25
Q

How is tularemia transmitted to humans?

A

Tick bite

26
Q

Reservoirs of Francisella tularensis?

A

Rodents and lagomorphs (rabbits)

27
Q

What bacteria spp causes rabbit fever?

A

Francisella tularensis

28
Q

What are the most consistent lesions associated with Francisella tularensis?

A

white foci of necrosis on liver and sometimes spleen, lung, and lymphnodes

29
Q

Francisella tularensis has many different forms: name 4

A
  1. Ulceroglandular
  2. Glandular
  3. Oropharyngeal
  4. Pneumonic
30
Q

What animal species are resistant to tularemia?

A

Pigs and cattle

31
Q

_____________ resides exclusively in the equine genital tract of both sexes

A

Taylorella equigenitalis

32
Q

_________ is the causative agent of contagious equine metritis

A

Taylorella equigenitalis

33
Q

Taylorella equigenitalis is found in the ________ of mares

A

Clitoral fossa

34
Q

Taylorella equigenitalis is found in the ________ of stallions

A

Urethral fossa

35
Q

Taylorella equigenitalis shows no clinical signs in __________

A

Stallions

36
Q

True or False: Taylorella equigenitalis causes permanent infertility in mares

A

False - temporary infertility

37
Q

What specimens should be collected if you suspect Taylorella equigenitalis in a mare?

A

Swabs from:
-clitoral fossa
-clitoral sinuses
-endometrium during estrus

38
Q

What specimens should be collected if you suspect Taylorella equigenitalis in a stallion?

A

3 swabs from each area:

-Urethra
-Urethral fossa
-penile sheath
-pre-ejaculatory fluid

Sem 3: BacT (16 decks)

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