PQS - Pasteurelloses✅

Question 1

Asymptomatic carriage of Pasteurella multocida can occur in birds

Answer 1

T

Question 2

Pasteurella multocida is highly resistant: it can survive in the environment for several
months

Answer 2

F

Have a low resistance because the LPS cell wall is thin, BUT it can survive for a few weeks

Question 3

Pasteurella multocida can cause pasteurellosis in small ruminants

Answer 3

T

Question 4

Pasteurella multocida can infect humans

Answer 4

T

Question 5

Primary pasteurellosis disease have no predisposing factors

Answer 5

F

It only means that there are no previous infection needed

Question 6

Pasteurella multocida can complicate canine distemper.

Answer 6

T

Question 7

Leukotoxin (cytotoxin) production is an important virulence factor of Mannheimia
haemolytica

Answer 7

T

The bacteria can produce leukotoxin, which is a cytotoxin, excreted by the bacteria and it attaches the leucocytes

Question 8

The dermonecrotoxin of Pasteurella multocida damages the osteoclast cells

Answer 8

F

Question 9

Primary pasteurellosis diseases are caused by obligate pathogenic Pasteurella bacteria

Answer 9

F

facultative pathogenic bacterium

Question 10

Dermonecrotoxin can be virulence factor of Pasteurella multocida

Answer 10

T

Dermonecrotoxin = a protein tocin excreted by the bacteria, its an exotoxin

Question 11

Dermonecrotoxin of pasteurella multocida causes lesions in the nasal cavity and on the skin
of pigs

Answer 11

F

Question 12

Capsule can be virulence factor of Pasteurella multocida

Answer 12

T

The capsule protects the bacteria from phagocytosis

Question 13

Asymptomatic carriage of Pasteurella multocida can occur in bird

Answer 13

T

Question 14

Enterotoxins are virulence factors of Pasteurella multocida

Answer 14

F

Question 15

The agent of acute systemic pasteurellosis is zoonotic

Answer 15

F

Question 16

Mannheimia haemolytica leukotoxin (cytotoxin) damages the macrophages

Answer 16

T

Question 17

Pasteurella ovis can cause pasteurellosis in small ruminants

Answer 17

F

P.mulitcoida

Question 18

Arthritis can be a clinical sign of ovine pasteurellosis

Answer 18

T

Question 19

Transportation is a predisposing factor of respiratory pasteurellosis of calves

Answer 19

T

Question 20

Primary pasteurellosis diseases have non infectious predisposing factors

Answer 20

T

Question 21

Emboli are responsible for the necrosis seen in the case of acute systemic pasteurellosis

Answer 21

T

Question 22

Leukotoxin is a virulence factor of Mannheimia haemolytica.

Answer 22

T

Question 23

Capsule is a virulence factor of Pasteurella multocida.

Answer 23

T

Question 24

Leukotoxin is produced by the majority of Pasteurella multocida.

Answer 24

F

Produced by Mannehimia haemoytica

Question 25

Pasteurella multocida can cause disease only in ruminants

Answer 25

F

Question 26

Mannheimia haemolytica can cause disease mainly in ruminants

Answer 26

T

Question 27

Bibersteinia trehalosi can infect ruminants.

Answer 27

T

Question 28

Pasteurellaceae are resistant bacteria, they remain viable for a long time in the soil

Answer 28

F **Low resistance**

Question 29

The virulence factors of P. multocida are the capsule and dermonecrotoxin.

Answer 29

T

Question 30

Pasteurella are very resistant in the environment

Answer 30

F

Question 31

Pasteurella are obligate pathogens

Answer 31

F **facultative pathogenic bacteria**

Question 32

We can use inactivated bacteria as a vaccine for Pasteurella

Answer 32

T