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EPI 1 > Reovirus > Flashcards

Reovirus Flashcards

1
Q

Orbiviruses spread by droplet (aerosol) infection

A

F

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2
Q

Orbiviruses can be cultivated in vivo by inoculation of embryonated eggs

A

T

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3
Q

Genetic reassortments may cause significant antigenic changes in reovirus strains

A

T

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4
Q

Orbiviruses are serologically uniform

A

F

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5
Q

Orbiviruses are mainly arboviruses

A

T

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6
Q

Reoviruses are sensitive to lipid solvents and detergents

A

F

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7
Q

Orthoreoviruses frequently cause tenosynovitis of horses

A

F

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8
Q

Orthoreoviruses can cause pneumoenteritis in calves

A

T

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9
Q

Orthoreoviruses can cause pneumoenteritis in cattle

A

T

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10
Q

Avian orthoreo –and rotaviruses can cause runting sunting syndrome in chickens

A

T

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11
Q

Avian orthoreoviruses cause mainly nephritis and encephalitis

A

F

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12
Q

Infection of adult birds with orthoreoviruses usually remains subclinical

A

T

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13
Q

Avian orthoreoviruses usually transmitted by germinative route

A

T

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14
Q

Avian orthoreoviruses can cause damages in the bursa Fabricii

A

T

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15
Q

Mammalian orthoreoviruses can cause pneumoenteritis only in suckling animals

A

F

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16
Q

Orthoreovirus can cause tenosynovitis in pigs

A

F

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17
Q

Avian orthoreoviruses usually cause disease in adult birds

A

F

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18
Q

Tenosynovitis is one of the most frequent manifestations of avian orthoreovirus infections

A

T

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19
Q

Trypsin-sensititive avian orthoreovirus usually cause respiratory disease in birds

A

T

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20
Q

Yolk immunity does not influence the efficacy of vaccination against avian orthoreovirus

A

F

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21
Q

Avian orthoreoviruses may cause necrotic foci in the visceral organs of birds

A

T

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22
Q

Avian orthoreoviruses can cause inapparent infection in poultry

A

T

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23
Q

Orthoreoviruses can be detected by haemagglutination test

A

T

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24
Q

Trypsin resistant strains of Avian orthoreoviruses frequently cause diarrhoea

A

T

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25
Q

Trypsin sensitive strains of avian orthoreoviruses frequently cause tenosynovitis

A

T

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26
Q

Horses usually develop lethal hemorrhagic enteritis in Orthoreovirus infections

A

F

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27
Q

Infection of adult birds with Orthoreoviruses usually remains subclinical

A

T

28
Q

Orthoreoviruses can cause encephalitis in cattle

A

F

29
Q

Avian orthoreoviruses can cause inapparent infections in poultry

A

T

30
Q

Avian orthoreoviruses can cause poult enteritis-mortality syndrome (PEMS)

A

T

31
Q

Infectious tenosynovitis can be prevented by vaccination

A

T

32
Q

Avian orthoreoviruses infect only via inhalation and parenterally

A

F

33
Q

Avian orthoreoviruses only infect via PO infections

A

F

34
Q

All Avian orthoreoviruses can spread germinatively

A

T

35
Q

Helicopter disease causes feather problems

A

T

36
Q

Orthoreovirus infections cause immunosuppression in birds

A

T

37
Q

Tenosynovitis is a frequent sign of Avian Orthoreovirus infection

A

T

38
Q

Orthoreovirus mainly infects younger animals

A

T

39
Q

Orthoreovirus causes respiratory and GI disease

A

T

40
Q

Tenosynovitis is caused by only one Orthoreovirus

A

F

41
Q

Orthoreoviruses frequently cause tenosynovitis of horses

A

F

42
Q

Rotaviruses are sensitive to environmental conditions

A

F

43
Q

Rotavirus infection is sporadic within the herd

A

F

44
Q

Rotavirus only infects mammals

A

F

45
Q

Clinical signs of rotavirus infection are usually seen in animals older than 2 weeks of age

A

F

46
Q

Swine is not susceptible to rotavirus infection

A

F

47
Q

Rotaviruses predispose to E.Coli infection in suckling piglets

A

T

48
Q

Rotaviruses are shed in the faeces in high titres

A

T

49
Q

Rotavirus infection results in high mortality

A

F

50
Q

Avian rotaviruses are transmitted by germinative infection

A

F

51
Q

Losses due to rotavirus infection of young animals can be prevented by colostrum feeding

A

T

52
Q

Rotaviruses usually cause enteritis in young (1-2 weeks old) animals

A

T

53
Q

Clinical signs of rotavirus infection are usually seen in animals older than 2 weeks of age

A

F

54
Q

Rotaviruses damage the mucosa of the large intestines

A

F

55
Q

Rotaviruses are serologically uniform

A

F

56
Q

Rotaviruses are typically transmitted via the faecal oral route

A

T

57
Q

Swine rotavirus infection is frequently followed by E. coli secondary infection in piglets

A

T

58
Q

Avian rotaviruses can cause tenosynovitis

A

F

59
Q

Rotaviral enteritis of calves can be prevented by immunization of pregnant cows

A

T

60
Q

Rotaviruses can cause chronic enteritis and persistent infection

A

F

61
Q

Rotaviruses cause mainly respiratory signs in cattle

A

F

62
Q

Rotaviruses mainly cause respiratory disease in older animals

A

F

63
Q

Rotaviruses typically cause respiratory disease in 3-6 month old calves

A

F

64
Q

Rotavirus is species specific

A

F

65
Q

Rotaviruses frequently cause tenosynovitis in birds

A

F

66
Q

Vaccination of horses in the Americas is used to prevent rotavirus infections

A

T

EPI 1 (56 decks)

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