Exam 3: Brucella

Question 1

T/F, Brucella is reportable

Answer 1

T

Question 2

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

Answer 2

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

Question 3

What is the principle ccause of Brucellosis in humans

Answer 3

B. melitensis

Question 4

What gives you a false positive serology for brucella

Answer 4

Y. enterocolitica 09 infection

Question 5

T/F brucella is mainly spread by male animals

Answer 5

F. females,

Question 6

Spp. of brucella in cattle

Answer 6

B. abortus

Question 7

C/S of brucella in cattle

Answer 7

no symptoms

Question 8

Where is Brucella found in cattle

Answer 8

intracellular in macrophages

Question 9

What is the incubation period of B. abortus

Answer 9

1-6 weeks

Question 10

how is B. abortus introduced into the cow

Answer 10

Mucosae
Oral
Wounds

Question 11

What are the target organs of B. abortus

Answer 11

Repro organs

Question 12

How do you Dx B. abortus

Answer 12

Milk samples for Abs and ags.

Question 13

VF of B. abortus

Answer 13

Cell wall

Question 14

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

Answer 14

1. smooth colonies

2. Rough colonies

Question 15

Which colony of Brucella is more virulent

Answer 15

Smooth

Question 16

What cell wall component is responsible for preferential location

Answer 16

Erythritol

Question 17

how do you DX Brucella

Answer 17

1. SAW test
2. Two ELISAs
3. IFN gamma test

Question 18

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

Answer 18

Tests for cellular immunity but often get positives

Question 19

What test do you you to distinguish between false positives

Answer 19

EU regulation

Question 20

T/F B. suis is a reportable dz

Answer 20

T

Question 21

Reservoir for B. suis

Answer 21

Wild boar

Question 22

How many biovars are there of B. suis

Answer 22

5

1-3 are most pathogenic

Question 23

What is the target organs of B. suis

Answer 23

Repro tract

Question 24

what are the C/s of B. suis

Answer 24

1. Abortion
2. Arthritis
3. osteomyelits

Question 25

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

Answer 25

T. but no c/s

Question 26

how is B. suis introduced into the pig

Answer 26

1. skin | 2. mucosae

Question 27

Where does B. suis multiply

Answer 27

Reginal ln.

Question 28

Where is B. suis carried in carrier animals

Answer 28

Macrophages

Question 29

Where geographically is B. melitensis and B. ovis found

Answer 29

Mediterranean

Question 30

T/F B. canis does not have O antigens

Answer 30

T

Question 31

C/S. of B. canis

Answer 31

1. Late abortion 2. Epididymitis 3. Scrotal derm

Question 32

How do you dx B. canis

Answer 32

1. bacteriology | 2. Serology