Outcome of Viral Diseases

Question 1

1) The agent does not replicate in dead end hosts

Answer 1

false

Question 2

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

Answer 2

false

Question 3

3) In the case of latent infection the agents are continuously shed

Answer 3

false

Question 4

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

Answer 4

true

Question 5

5) In latent infection, there is no virus shedding

Answer 5

true

Question 6

6) Abortion is the main clinical sign of abortive infections

Answer 6

false

Question 7

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

Answer 7

false

Question 8

8) Tolerated infections result in high level of immune reaction

Answer 8

false

Question 9

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

Answer 9

true

Question 10

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

Answer 10

false

Question 11

11) The agent is not shed in the case of inapparent infections

Answer 11

false

Question 12

12) Dead end hosts do not shed the agent

Answer 12

true

Question 13

13) Asymptomatic infections can become manifest

Answer 13

true

Question 14

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

Answer 14

true

Question 15

15) When the clinical signs disappear, shedding the agent is finished

Answer 15

false

Question 16

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

Answer 16

false

Question 17

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

Answer 17

false

Question 18

18) Animals with tolerated infection shed the agent

Answer 18

true

Question 19

19) Only animals showing clinical signs can shed infective agents

Answer 19

false

Question 20

20) In case of inapparent infections no clinical signs can be seen

Answer 20

true

Question 21

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

Answer 21

false

Question 22

22) In the case of inapperent infections seropositivity can be seen

Answer 22

true

Question 23

23) Inapparent infections cannot be detected in laboratory examinations

Answer 23

false

Question 24

24) In case of abortive infection, the animal always aborts

Answer 24

false

Question 25

25) In case of subclinical infection, the animals can shed the agent

Answer 25

true

Question 26

26) Tolerated infection can be demonstrated only by serology

Answer 26

false

Question 27

27) Abortive infection can be demonstrated only by serology

Answer 27

true

Question 28

28) During a tolerated infection the animals are seropositive

Answer 28

false

Question 29

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

Answer 29

false

Question 30

30) Asymptomatic infections cannot be manifest.

Answer 30

false but should be true

Question 31

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

Answer 31

false