MT2 - Flavi Flashcards

1
Q

1) Serological cross reactions frequently occur between related flaviviruses

A

T

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2
Q

2) Pestiviruses are zoonotic

A

F

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3
Q

3) Pestiviruses are arboviruses

A

F

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4
Q

4) Louping ill is seen in cattle in North America

A

F

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5
Q

5) The louping ill was introduced to Austrailia to control rabbit population

A

F

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6
Q

6) The louping ill is seen in cattle in Great Britain and Scandinavia

A

F

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7
Q

7) The tick borne encephalitis is endemic in central Europe

A

T

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8
Q

8) The main vectors of tick borne encephalitis virus are sylvatic mammalian species

A

F

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9
Q

9) The tick borne encephalitis virus can be transmitted via consumption of raw milk

A

T

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10
Q

10) Migratory birds play a role in the transmission of West Nile virus

A

T

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11
Q

11) Mammals are mostly accidental hosts of West Nile Fever virus

A

T

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12
Q

12) West Nile Fever is a notifiable disease

A

T

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13
Q

13) In West Nile epidemics wild bird mortality is usually observed before horse and human cases can be detected

A

T

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14
Q

14) To prevent West Nile Fever, vaccine is available for horses

A

T

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15
Q

15) The West Nile Fever can be diagnosed unambiguously by the clinical signs

A

F

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16
Q

16) The West Nile Fever virus infects mostly swine and cattle

A

F

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17
Q

17) The West Nile virus may cause encephalitis in humans and in horses

A

T

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18
Q

18) Horses and humans do not play a significant role in the transmission of West Nile virus

A

T

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19
Q

19) The West Nile fever epidemics occur usually at the end of summer and during Autumn

A

T

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20
Q

20) West Nile fever is a notifiable disease

A

T

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21
Q

21) The Japanese encephalitis virus causes abortion in swine

A

T

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22
Q

22) The Wesselsbron disease causes meningoencephalitis in turkey

A

F

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23
Q

23) The yellow fever virus causes liver damages

A

T

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24
Q

24) The zika virus causes fever, rash and conjunctivitis in humans

A

T

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25
Q

25) BVDV can be frequently detected in the background of respiratory diseases

A

T

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26
Q

26) Cytopathic and non-cytopathic biotypes of the Bovine Viral Diarrhoea (BVD) virus are known

A

T

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27
Q

27) In utero infection with non-cytopathic BVDV can cause seropositivity of the newborn calf

A

T

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28
Q

28) Non cytopathic strains of Bovine viral diarrhoea virus (BVDV) can cause hydrocephalus and cerebellar hypoplasia

A

F

29
Q

29) In utero infection with non cytopathic BVDV can cause immunotolerance

A

T

30
Q

30) Pigs infected with BVDV turn seropositive to classical swine fever

A

T

31
Q

31) Persistently infected cattle can maintain BVDV in a farm

A

T

32
Q

32) Cytopathic strains of Bovine Viral diarrhoea (BVDV) alone can cause mucosal disease

A

F

33
Q

33) The BVD virus can infect pigs also

A

T

34
Q

34) Cytopathic strains of the Bovine Viral Diarrhoea virus (BVDV) can cause abortion

A

T

35
Q

35) Non cytopathic strains of Bovine Viral Diarrhoea virus (BVDV) do not cause transplacental infection

A

?

36
Q

36) Cattle which are immune tolerant to BVD virus may develop mucosal disease

A

T

37
Q

37) In sheep BVDV causes symptoms similar to border disease

A

T

38
Q

38) Mucosal disease can develop in cattle persistently infected with BVDV

A

T

39
Q

39) Non cytopathic strains of Bovine viral diarrhoea virus (BVDV) can cause immunosuppression

A

T

40
Q

40) BVDV can be transmitted by semen

A

T

41
Q

41) In mucosal disease sharp edged, usually round or oval ulcers can be observed on the oral mucosa

A

T

42
Q

42) In mucosal disease haemorrhages can be observed under the serosal surfaces and in the kidney cortex

A

T

43
Q

43) Bloody diarrhoea is a clinical sign of the mucosal disease

A

T

44
Q

44) The Border disease virus causes pneumonia in sheep

A

F

45
Q

45) The border disease is present only in the United Kingdom

A

F

46
Q

46) The border disease virus frequently causes encephalitis in ewes

A

F

47
Q

47) Haemorrhagic enteritis is a characteristic pathological lesion of Classical swine fever

A

T

48
Q

48) Classical swine fever virus can be transmitted by raw pork products

A

T

49
Q

49) Classical swine fever virus can retain its infectivity for 6 months in frozen meat

A

T

50
Q

50) During necropsy enlarged bloody lymph nodes can be seen in Classical swine fever cases

A

T

51
Q

51) Because of endothelial damage Classical swine fever results in haemorrhages

A

T

52
Q

52) In acute Classical swine fever, at the beginning obstipation, later diarrhoea can be observed

A

T

53
Q

53) Classical swine fever targets the bone marrow stem cells

A

T

54
Q

54) Weakness of the hind legs and ataxia are clinical signs of Classical Swine Fever

A

T

55
Q

55) Ischaemic infarcts at the edges of the pleen are postmortem lesions of subacute Classical Swine Fever

A

T

56
Q

56) The boutons in the intestines are characteristic lesions in subacute Classical Swine Fever

A

T

57
Q

57) Kidney haemorrhage is a characteristic lesion of Classical Swine Fever

A

T

58
Q

58) During necropsy of acute Classical swine fever cases, haemorrhages can be seen in the gastric mucosa

A

T

59
Q

59) Among Classical Swine Fever clinical signs CNS and eye problems can be observed

A

T

60
Q

60) Classical swine fever infection during the first half of pregnancy results in the birth of immunotolerant piglets

A

T

61
Q

61) Classical swine fever causes oronasal infection

A

T

62
Q

62) Classical swine fever can be transmitted by mating

A

T

63
Q

63) Classical swine fever targets lymphatic tissues

A

T

64
Q

64) Clinical signs of Classical Swine fever are mainly seen in 6-12 week old piglets in vaccinated herds

A

T

65
Q

65) Classical swine fever infection during the first half of pregnancy can lead to abortion

A

T

66
Q

66) In Europe it is obligatory to vaccinate against Classical swine fever

A

F

67
Q

67) In acute Classical swine fever skin haemorrhages and bloody nasal discharge can be observed

A

T

68
Q

68) Normal sized spleen can be observed in uncomplicated cases of subacute Classical swine fever

A

T

69
Q

69) Classical swine fever infection results in immunosuppression

A

T