Orthobunya FERDIG Flashcards

1
Q

All Bunyaviruses are transmitted by mosquitoes

A

F

– mainly mosquito or tick vectors

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2
Q

Bunyaviruses cause oral infection

A

F

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3
Q

The virus causing severe fever and thrombocytopenia syndrome is transmitted

A

T

Phlebovirus causing rift valley fever

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4
Q

Several bunyaviruses are zoonotic agents

A

T

  • Hantaviruses
  • Rift Valley fever virus
  • Crimean-Congo hemorrhagic fever virus
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5
Q

Serological cross-reactions are frequent between related bunyaviruses

A

T
?

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6
Q

All bunyaviruses are vectored by insects

A

F

-Hantavirus genus within the Bunyaviridae family is primarily transmitted to humans through inhalation of aerosolized virus particles from rodent feces, urine, or saliva

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7
Q

All bunyaviruses are vectored by ticks

A

F

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8
Q

Orthobunyaviruses are transmitted by haematophagous arthropods

A

T

-hematophagous (blood-feeding) arthropods, such as mosquitoes, midges, or ticks.

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9
Q

Several virus species belong to Bunyaviridae family, many present only in tropical regions.

A

T

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10
Q

Bunyaviruses are typically arboviruses

A

T

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11
Q

Bunyaviriuses has good antigens and good immune reaction

A

T
?

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12
Q

The Rift Valley Fever virus causing severe fever and thrombocytopenia syndrome is transmitted by tick

A

T

Phlebovirus: Rift Valley Fever, severe fever and thrombocytopenia syndrome

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13
Q

The Aino virus causes foetal development problems and abortion in sheep

A

T

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14
Q

Akabane virus is zoonotic

A

F

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15
Q

Akabane virus causes foetal damages in dogs

A

F

  • Turkey; cattle, sheep, goat;
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16
Q

Akabane disease virus causes foetal damages in sheep

A

T

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17
Q

Abortions and foetal malformations are the most typical signs of Akabane disease

A

T
?

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18
Q

The Akabane disease is mainly seen in geese

A

F
-cattle, sheep, goat

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19
Q

The Akabane disease can cause abortion in sheep

A

T
?

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20
Q

The main symptoms of the akabane disease are foetal development disorders

A

T
?

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21
Q

The main symptoms of akabane disease are the malformation of the fetus

A

T
?

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22
Q

Akabane, Aino and Schmallenberg viruses cause similar disease in ruminants

A

T
?

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23
Q

Akabane occurs in South-West Africa and is a disease of swine

A

F

In Asia, Africa and Australia

Causes diseases in: sheep, cattle, goat, turkey

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24
Q

Schmallenberg virus causes disease only in Suffolk sheep breed

A

F

  • Suffolk, Texel, Blue Texel
  • Dairy, Flevolander
  • Swifter, Blessumer
  • cross-breeds
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25
Q

Schallenberg virus causes foetal damages in humans

A

F

-Ø human

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26
Q

Schmallenberg virus causes foetal development problems more frequently in cattle than in sheep

A

F

Sheep is more sensitive, in cattle congenital disorders are rarely seen

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27
Q

Schmallenberg virus is present worldwide

A

F

  • europe
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28
Q

Human is a competent host of Rift Valley fever virus i.e. the viraemic titre is high enough to infect the vector

A

T

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29
Q

The Rift valley fever virus damages the blood vessels thus causes haemorrhages

A

T

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30
Q

Wild rabbits are reservoirs of Rift valley fever virus

A

F

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31
Q

Rift valley fever is a human only disease

A

F

most commonly seen in domestic animals ( cattle, buffalo, sheep, goats, camels)

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32
Q

Nairobi sheep disease causes generalized infection in the animals

A

T

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33
Q

Vaccines are available in endemic regions to prevent Nairobi sheep disease

A

T

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34
Q

Nairobi sheep disease leads to abortion in the infected pregnant animals

A

T

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35
Q

Nairobi sheep disease causes haemorrhagic enteritis in the infected animals

A

T

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36
Q

Small rodents serve as reservoir hosts of Hantaviruses

A

T

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37
Q

Hantaviruses can cause renal failure in human

A

T

38
Q

The Crimean-congo haemorrhagic fever is a human disease with headache, muscle pain and skin haemorrhages

A

T

39
Q

Crimean-Congo Haemorrhagic fever virus is tick born

A

T

40
Q

Schmallenberg virus causes foetal damages in pigs

A

F

41
Q

Schmallenberg virus causes foetal damages in sheep

A

T

42
Q

Schmallenberg virius associated disease as 1st observed in 2011 in certain Western European countries

A

T

43
Q

The Schmallenberg virus causes severe disease in humans

A

F

-no human

44
Q

The acute signs of Schmallenberg virus infection in cattle are fever and reduced milk production

A

T

45
Q

Rodents are the reservoir hosts of Schmallenberg virus.

A

T

46
Q

In cattle Schmallenberg virus causes transient febrile disease with reduced milk production.

A

T

47
Q

The Schmallenberg virus is a zoonotic agent

A

F

48
Q

Ticks are reservoirs and vectors of the Schmallenberg virus

A

F

49
Q

Schmallenberg virus was transported to Europe from South-America

A

F

50
Q

Schmallenberg virus emerged in Western Europe, in 2011, and spread rapidly in ruminants.

A

T

51
Q

In sheep the Schmallenberg virus mainly causes foetal malformations.

A

T

52
Q

Schmallenberg spread by midges vectors

A

T

Culicoides spp

53
Q

No human case report on Schmallenberg virus

A

T

But due to it being a bunyavirus, we cannot rule out zoonosis

54
Q

Pneumonia and abortion are the main signs of Schmallenberg virus infection in sheep.

A

F

55
Q

Midges are the main vectors of Schmallenberg virus

A

T

56
Q

Signs of acute Schmallenberg virus infection in cattle are lower and reduced milk production.

A

T

57
Q

The rift valley fever virus causes foetal damages in sheep

A

F

58
Q

Certain European mosquito species are competent vectors of Rift Valley fever virus

A

T

Aedes mosquitos are primary vectors, which are present in Europe

59
Q

Rift Valley fever may cause high lethality in young ruminants

A

T

10-70% lethality in calves

60
Q

Rift Valley fever virus is a zoonotic agent.

A

T

Humans show more severe clinical signs

61
Q

The Rift Valley fever virus can cause reproductive disorders in cattle and sheep

A

T

62
Q

Necrotic hepatitis is a lesion of Rift Valley fever

A

T

63
Q

Rift-valley fever caused human epidemics in Africa

A

T

64
Q

Rift Valley fever virus caused severe human outbreaks in Africa and in the Arab peninsula.

A

T

65
Q

The principle vectors of the rift valley disease are gnats

A

F
Primary vector=aedes mosquitos

66
Q

Rift valley fever outbreaks are most frequently seen in horses

A

F

ruminants

67
Q

Rift valley fever virus may cause 100% mortality in young susceptible animals

A

T

68
Q

In enzootic regions vaccines are used for the prevention of rift valley fever

A

T

In non-endemic regions we use epidemiological restrictions

69
Q

Nairobi disease virus causes foetal damages in sheep

A

T

70
Q

The Nairobi sheep disease can cause abortion in sheep.

A

T

71
Q

The most frequent sign of the Nairobi sheep disease is encephalitis

A

F

72
Q

Haemorrhagic gastroenteritis is a lesion of Nairobi sheep disease

A

T

We see haemorrhages everywhere

73
Q

Nairobi sheep disease is zoonotic

A

T

Depending on country if it is notifiable or not, but it is OIE listed

74
Q

Nairobi sheep disease can cause haemorrhagic enteritis among sheep.

A

T

75
Q

The most important symptom of the Nairobi sheep disease is nephritis

A

F

76
Q

Nairobi disease occurs mainly in sheep

A

T

77
Q

The leading symptom of Nairobi disease is renal insufficiency

A

F

78
Q

The Nairobi sheep disease is vectored by ticks

A

T

79
Q

Nairobi sheep disease primarily causes pathological changes in the kidney (renal insufficiency)

A

F

80
Q

Hantaviruses may cause respiratory disease in humans

A

T

81
Q

Hantaviruses causes haemorrhagic fever in humans

A

T

82
Q

Hantaviruses cause hemorrhagic fevers in rodents

A

F

Rodents are reservoirs, they show no signs of disease

83
Q

Hanta viruses can cause renal symptoms in humans

A

T

84
Q

Mainly rodents are the natural reservoir of hanta viruses

A

T

85
Q

Hanta viruses are naturally maintained by rodents

A

T

86
Q

In domestic animals Hanta viruses typically cause liver dystrophy

A

F

Hanta viruse affects humans

87
Q

Hanta virus infected people may develop severe renal failure

A

T

88
Q

Rodents are reservoir for Hanta virus

A

T

89
Q

Hanta virus cause renal disorders in humans

A

T

90
Q

Hanta viruses cause encephalitis in horses

A

F