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Bacteriology > Exam 3: Brucella > Flashcards

Exam 3: Brucella Flashcards

1
Q

T/F, Brucella is reportable

A

T

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2
Q

What are the 4 spp. of Brucella we talked about in class

A

B. melitensis
B. abortus- cattle
B. suis-pig
B. canis- dog

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3
Q

What is the principle ccause of Brucellosis in humans

A

B. melitensis

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4
Q

What gives you a false positive serology for brucella

A

Y. enterocolitica 09 infection

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5
Q

T/F brucella is mainly spread by male animals

A

F. females,

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6
Q

Spp. of brucella in cattle

A

B. abortus

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7
Q

C/S of brucella in cattle

A

no symptoms

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8
Q

Where is Brucella found in cattle

A

intracellular in macrophages

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9
Q

What is the incubation period of B. abortus

A

1-6 weeks

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10
Q

how is B. abortus introduced into the cow

A

Mucosae
Oral
Wounds

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11
Q

What are the target organs of B. abortus

A

Repro organs

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12
Q

How do you Dx B. abortus

A

Milk samples for Abs and ags.

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13
Q

VF of B. abortus

A

Cell wall

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14
Q

What are the two colonies of B. abortus based on cell wall

A
  1. smooth colonies

2. Rough colonies

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15
Q

Which colony of Brucella is more virulent

A

Smooth

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16
Q

What cell wall component is responsible for preferential location

A

Erythritol

17
Q

how do you DX Brucella

A
  1. SAW test
  2. Two ELISAs
  3. IFN gamma test
18
Q

What is the Brucellergen skin test, and why is it not recommended

A

Tests for cellular immunity but often get positives

19
Q

What test do you you to distinguish between false positives

A

EU regulation

20
Q

T/F B. suis is a reportable dz

A

T

21
Q

Reservoir for B. suis

A

Wild boar

22
Q

How many biovars are there of B. suis

A

5

1-3 are most pathogenic

23
Q

What is the target organs of B. suis

A

Repro tract

24
Q

what are the C/s of B. suis

A
  1. Abortion
  2. Arthritis
  3. osteomyelits
25
Q

T/F. swine can become infected with B. abortus, B. melitensis, and B. canis

A

T. but no c/s

26
Q

how is B. suis introduced into the pig

A
  1. skin

2. mucosae

27
Q

Where does B. suis multiply

A

Reginal ln.

28
Q

Where is B. suis carried in carrier animals

A

Macrophages

29
Q

Where geographically is B. melitensis and B. ovis found

A

Mediterranean

30
Q

T/F B. canis does not have O antigens

A

T

31
Q

C/S. of B. canis

A
  1. Late abortion
  2. Epididymitis
  3. Scrotal derm
32
Q

How do you dx B. canis

A
  1. bacteriology

2. Serology

Bacteriology (31 decks)

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