Outcome of Viral Diseases

Question 1

The agent does not replicate in dead end hosts

Answer 1

F

Question 2

Dead end hosts do not show clinical signs, they die without signs

Answer 2

F

Question 3

In the case of latent infection the agents are continuously shed

Answer 3

F

Question 4

Latent infection happens when the genome of the agent is integrated in the genome of
the host

Answer 4

T

Question 5

In the case of latent infections, the agents are continually shed

Answer 5

F

Question 6

In latent infection, there is no virus shedding

Answer 6

T

Question 7

Abortion is the main clinical sign of abortive infections

Answer 7

F

Question 8

The animals do not carry the agent after recovery from an infectious disease because
the immune system eliminates it.

Answer 8

F

Question 9

Tolerated infections result in high level of immune reaction.

Answer 9

F

Question 10

Infection before self-recognition of the immune system can result tolerated infections

Answer 10

T

Question 11

Infected animals have a high level of antibodies in the case of tolerated infections

Answer 11

F

Question 12

The agent is not shed in the case of inapparent infections.

Answer 12

F

Question 13

Dead end hosts do not shed the agent.

Answer 13

T

Question 14

Asymptomatic infections can become manifest

Answer 14

T

Question 15

Formation of immune complexes can be a consequence of persistent viral infection

Answer 15

T

Question 16

When the clinical signs disappear, shedding the agent is finished

Answer 16

F

Question 17

In the case of an abortive infection no clinical signs will be seen

Answer 17

T

Question 18

In the case of latent infection only mild clinical signs will be seen

Answer 18

F

Question 19

Animals with tolerated infection shed the agent

Answer 19

T

Question 20

Only animals showing clinical signs can shed infective agents.

Answer 20

F

Question 21

In case of inapparent infections no clinical signs can be seen

Answer 21

T

Question 22

Latent infection is common in the case of Gram-positive bacteria.

Answer 22

F

Question 23

In the case of inapperent infections seropositivity can be seen.

Answer 23

T

Question 24

Inapparent infections cannot be detected in laboratory examinations

Answer 24

F

Question 25

In case of abortive infection, the animal always aborts.

Answer 25

F

Question 26

In case of subclinical infection, the animals can shed the agent.

Answer 26

T

Question 27

Tolerated infection can be demonstrated only by serology

Answer 27

F

Question 28

Abortive infection can be demonstrated only by serology.

Answer 28

T

Question 29

During a tolerated infection the animals are seropositive.

Answer 29

F

Question 30

In the case of latent infection no clinical signs can be seen

Answer 30

T

Question 31

Asymptomatic infections cannot be manifest.

Answer 31

F

Question 32

Animals do not carry the agents after recovery from an infectious disease.

Answer 32

F