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Epidemiology > Midterm 2 (2017-2018) > Flashcards

Midterm 2 (2017-2018) Flashcards

1
Q

In Europe, only low virulence strains of Infectious Bursal Disease Virus (IBVD) can be found

A

False

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2
Q

Infectious Bursal Disease is a very infectious disease

A

True

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3
Q

Pigeons are the most susceptible to IBDV

A

False

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4
Q

Early IBDV infection damages the humoral immunity

A

True

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5
Q

Wild birds are involved in the transmission cycle of Eastern Equine encephalomyelitis (EEE)

A

True

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6
Q

Ticks are involved in the transmission cycle of EEE

A

False

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7
Q

Viral Equine encephalomyelitis is usually diagnosed on the basis of clinical signs

A

False

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8
Q

In endemic countries vaccines are available against Eastern Equine Encephalomyelitis

A

True

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9
Q

Flaviviruses form distinct serotypes, without serological cross-reactions

A

False

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10
Q

Tick-borne encephalitis virus can be transmitted with raw goat milk

A

True

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11
Q

Tick-borne encephalitis is mainly seen in humans

A

True

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12
Q

The principle vector of the Louping ill virus is Rhipicephalus appendiculatus

A

False

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13
Q

West Nile virus (WNV) is only present in Africa

A

False

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14
Q

Horses are the reservoir host of West Nile virus

A

False

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15
Q

The weather influences the emergence of West Nile virus outbreaks, through its effect on mosquito propagation dynamics

A

True

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16
Q

Laboratory diagnosis should confirm the aetiology of West Nile encephalitis

A

True

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17
Q

Swine is not susceptible to the Bovine Viral Diarrhoea (BVD) virus

A

False

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18
Q

The BVD virus genotype 2 is less virulent than genotype 1

A

False

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19
Q

The BVD virus cannot be transmitted via artificial insemination

A

False

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20
Q

Intrauterine BVD virus infection always causes abortion

A

False

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21
Q

Fomites do not play a role in the transmission of the Classical Swine fever virus

A

False

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22
Q

Transplacental infection with CSFV may cause immunotolerance in new-born piglets

A

True

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23
Q

Swine shed CSFV only in the terminal phase of the disease

A

False

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24
Q

Europe is free from CSFV

A

False

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25
Q

Classical Swine Fever is always an acute disease with high mortality in wild boars

A

False

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26
Q

The large intestine are the earliest lesions in Classical Swine Fever

A

False

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27
Q

The diagnoses of Classical Swine Fever is based on paired serum investigations

A

False

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28
Q

Porcine circovirus 2 may cause lesions similar to Classical swine fever

A

True

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29
Q

Rodents are the reservoir hosts of Schmallenberg virus

A

True

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30
Q

In cattle, Schmallenberg virus causes transient febrile disease with decreased milk production

A

True

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31
Q

Rift Valley Fever virus is a zoonotic agent

A

True

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32
Q

The most frequent sign of the Nairobi sheep disease is encephalitis

A

False

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33
Q

African Swine fever does not occur in Europe

A

False

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34
Q

African Swine Fever is a resistant virus

A

True

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35
Q

Immunocomplexes are formed in the case of African Swine Fever

A

True

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36
Q

Only activated vaccines are used for the prevention of African Swine Fever

A

False

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37
Q

Teschen disease occurs all over the world

A

False

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38
Q

Only pigs are susceptible to teschovirus encephalomyelitis

A

True

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39
Q

Teschovirus encephalomyelitis virus is transmitted by arthropods

A

False

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40
Q

There is widespread vaccination using inactivated vaccines to prevent teschovirus encephalomyelitis

A

False

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41
Q

Encephalomyelitis virus can infect only pigs

A

False

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42
Q

Encephalomyelitis virus remains infective in the environment

A

True

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43
Q

Encephalomyelitis virus can cause per os infection

A

True

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44
Q

Encephalomyelitis virus can infect humans

A

True

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45
Q

FMD is sporadic is Europe

A

True

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46
Q

Resistance of FMD virus is high, in the environment it remains infectious for weeks

A

True

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47
Q

FMD virus frequently causes carditis in young animals

A

True

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48
Q

Water buffaloes are not susceptible for FMD

A

False

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49
Q

The main signs of FMD are: fever, salivation, formation of vesicles, and lameness

A

True

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50
Q

Serological examinations are important in diagnosis in FMD

A

False

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51
Q

In Europe, vaccines must not be used for prevention of FMD

A

True

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52
Q

In sheep, clinical signs of FMD are very mild, it is not easy to recognise

A

True

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53
Q

The Vesicular Exanthema of swine virus infects only pigs

A

False

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54
Q

Cats shed the Feline calcivirus for several weeks

A

True

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55
Q

Lameness and fever are possible clinical signs of Feline calcivirus infection

A

True

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56
Q

Rabbits over 1 month of age become susceptible to the Rabbit Haemorrhagic Disease virus

A

True

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57
Q

Genetic re-assortments may cause significant antigenic changes in reovirus strains

A

True

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58
Q

Bluetongue outbreaks mainly occur in summer and autumn

A

True

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59
Q

Goats are more resistant to the Bluetongue than sheep

A

True

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60
Q

In Europe, vaccination of small ruminants against Bluetongue is mandatory

A

False

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61
Q

The African Horse Sickness is endemic in Europe and in the USA

A

False

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62
Q

Oedemas and haemorrhages are the most frequent lesions in African Horse Sickness

A

True

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63
Q

The signs of chronic African Horse Sickness and and Equine Infectious Anaemia may be similar

A

True

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64
Q

The Equine encephalitis virus may cause abortion

A

True

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65
Q

Rotaviruses infect only mammals

A

False

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66
Q

Rotaviruses are typically transmitted via the faecal-oral route

A

True

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67
Q

Trypsin resistant strains of Avian orthoreoviruses frequently cause diarrhoea

A

True

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68
Q

Trypsin resistant strains of Avian orthoreoviruses frequently cause tenosynovitis

A

True

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69
Q

The Infectious Bursal Disease Virus (IBDV) is very resistant in the environment

A

True

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70
Q

Infection of day-old chicken with IBDV may cause permanent immunosuppression

A

True

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71
Q

Pathology lesions of the Infectious Bursal Disease Virus can be similar to the Avian Influenza

A

True

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72
Q

Young chicken can be immunised only with inactivated IBDV vaccines

A

False

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73
Q

The Eastern Equine Encephalitis is present in Japan and Korea

A

False

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74
Q

Mosquitoes are the principal vectors of the Western Equine Encephalitis

A

True

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75
Q

No characteristic gross pathology lesions are seen in Equine encephalitis caused by Togaviruses

A

True

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76
Q

Eastern, Western, and Venezuelan Equine encephalitis viruses are zoonotic agents

A

True

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77
Q

Serological cross reactions frequently occur between related Flaviviruses

A

True

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78
Q

The Tick-borne encephalitis virus can be transmitted via the consumption of raw milk

A

True

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79
Q

The Louping ill is seen in rabbits in Australia

A

False

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80
Q

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

A

True

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81
Q

Non-cytopathic strains of the Bovine Viral Diarrhoea virus (BVDV) can cause immunosuppression

A

True

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82
Q

In utero infection with non-cytopathic BVDV can cause immunotolerance

A

True

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83
Q

Mucosal Disease can develop in cattle persistently infected with BVDV

A

True

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84
Q

The Border Disease is present only in the United Kingdom

A

False

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85
Q

The Classical Swine Fever virus is a zoonotic agent

A

False

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86
Q

Low virulence strains of CSFV may cause reproductive problems

A

True

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87
Q

CSFV may damage the lymphatic tissues and blood vessel endothelial cells

A

True

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88
Q

Swine can shed CSFV in the incubation period

A

True

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89
Q

Skin suffusions and haemorrhages are signs of Classical Swine Fever

A

True

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90
Q

The clinical signs of African Swine Fever and Classical Swine Fever are very different

A

False

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91
Q

Contaminated pork meat can play a role in the transmission of CSFV

A

True

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92
Q

Attenuated vaccines are developed for immunisation for swine against CSFV

A

True

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93
Q

The Schmallenberg virus is a zoonotic agent

A

False

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94
Q

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

A

True

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95
Q

Necrotic hepatitis is a lesion of Rift Valley Fever

A

True

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96
Q

Haemorrhagic gastroenteritis is a lesion of Nairobi sheep disease

A

True

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97
Q

Ticks can transmit African Swine Fever virus

A

True

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98
Q

Swine and wild boars are susceptible to African swine fever

A

True

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99
Q

Warthogs can maintain African Swine Fever in endemic areas

A

True

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100
Q

Attenuated vaccines are used for the prevention of African Swine Fever

A

False

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101
Q

Swine Vesicular Disease virus can infect swine and ruminants

A

False

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102
Q

Swine Vesicular Disease virus can cause infection per os

A

True

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103
Q

Swine Vesicular Disease virus does not cause viraemia, only local lesions can be seen

A

False

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104
Q

Swine Vesicular Disease virus can infect humans

A

False

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105
Q

Duck hepatitis A virus is shed in the faeces

A

True

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106
Q

Duck hepatitis A virus can cause germinative infection

A

False

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107
Q

Clinical signs of Duck hepatitis A can be seen mainly in laying ducks

A

False

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108
Q

Duck hepatitis A virus can be detected via PCR

A

True

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109
Q

For Europe, Middle-East, Africa, and Asia, are the main dangers for introduction of FMD

A

True

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110
Q

In young animals, FMD virus frequently causes myocarditis

A

True

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111
Q

FMD virus is highly contagious, spreads rapidly

A

True

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112
Q

In endemically infected countries, vaccines are also used in prevention of FMD

A

True

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113
Q

O and A serotypes of FMD are mostly widespread in the world

A

True

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114
Q

In sheep, clinical signs of FMD are very mild

A

True

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115
Q

The resistance of FMD virus is rather low, in the environment it is inactivated within days

A

False

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116
Q

About half of the countries in the world are presently infected with FMD

A

True

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117
Q

Clinical signs of the Vesicular Exanthema of swine can be similar to the Foot and Mouth disease

A

True

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118
Q

Oral erosions are signs of Feline calcivirus infection

A

True

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119
Q

Virulent strains of the Feline calcivirus can cause systemic disease with mortality

A

True

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120
Q

The Rabbit Haemorrhagic Disease is present only in Australia

A

False

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121
Q

Reoviruses are sensitive to lipid solvents and detergents

A

False

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122
Q

The Bluetongue virus is vectored by midges / gnats

A

True

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123
Q

Lameness and abortions are signs of Bluetongue

A

True

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124
Q

The Epizootic Haemorrhagic Disease is present in the USA in deer

A

True

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125
Q

The natural reservoirs of the African Horse Sickness virus are mainly zebras

A

True

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126
Q

Encephalitis is the most frequent sign of the African Horse Sickness

A

False

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127
Q

Rotaviruses are shed in the faeces in high titres

A

True

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128
Q

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

A

True

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129
Q

Orthoreoviruses can cause pneumoenteritis in calves

A

True

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130
Q

Horses usually develop lethal haemorrhagic enteritis in Orthoreovirus infection

A

False

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131
Q

Infection of adult birds with Orthoreoviruses usually remains subclinical

A

True

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132
Q

Avian orthoreoviruses can cause necrotic and inflammatory foci in visceral organs

A

True

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133
Q

Very resistant strains of the Infection Bursal Disease virus (IBDV) may cause disease in chicken with maternally derived antibodies too

A

True

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134
Q

IBDV does not cause disease in adult chicken (over 2 months of age)

A

True

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135
Q

Fever, diarrhoea, and anaemia are signs of the Infectious Bursal Disease

A

True

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136
Q

Vaccines provide high level of protection against IBDV strains

A

False

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137
Q

African Swine Fever virus has a low resistance

A

False

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138
Q

African Swine Fever virus can infect pigs and wild boars

A

True

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139
Q

The clinical signs of African Swine Fever are more severe in wild boars than in farmed pigs

A

False

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140
Q

There is a widespread vaccination in endemic areas to prevent African Swine Fever

A

False

141
Q

Talfan disease occurs in Europe, America, and Australia

A

True

142
Q

Pigs and ruminants are susceptible to the agent of Talfan disease

A

False

143
Q

The agent of Talfan disease replicates in the gut

A

True

144
Q

The agent of Talfan disease is shed lifelong after the infection

A

False

145
Q

Germinative infection is the primary way of infection with Duck hepatitis A virus

A

False

146
Q

Clinical signs of Duck hepatitis are seen in 1-4 week old ducklings

A

Ture

147
Q

Spasmodical paddling is a typical sign of Duck hepatitis

A

True

148
Q

There are no vaccines for the prevention of Duck hepatitis

A

False

149
Q

Resistance of FMD virus is low, in the environment, they are inactivated within days

A

False

150
Q

FMD virus can get into Europe most easily from Turkey, Middle-East, and North-Africa

A

True

151
Q

FMD virus can cause severe myocarditis in young calves and piglets

A

True

152
Q

Clinical signs of FMD are very mild in sheep

A

True

153
Q

Pigs shed large amounts of FMD virus with their saliva during the acute phase of the disease

A

True

154
Q

O and A type of FMD viruses are most widely distributed

A

True

155
Q

The main clinical signs of FMD are: Fever, salivation, vesicles, and lameness

A

True

156
Q

In infected countries, inactivated vaccines are also used for prevention of FMD

A

True

157
Q

Cat queens frequently abort in the acute phase of Feline calcivirus infection

A

False

158
Q

Some variants of Feline calicivirus may escape vaccine induced protection

A

True

159
Q

Rabbit Hemorrhagic Disease virus usually causes death in 1-3 weeks old rabbits

A

False

160
Q

There are no vaccines available against Rabbit Hemorrhagic Disease

A

False

161
Q

Bluetongue is present only in tropical areas

A

False

162
Q

Bluetongue virus is typically vectored by ticks

A

False

163
Q

Endothelial damages are the most important causes of the clinical signs of Bluetongue

A

True

164
Q

Sheep are less sensitive to Bluetongue than swine

A

False

165
Q

Epizootic hemorrhagic disease was described only in Australia so far

A

False

166
Q

Occasionally carnivores may get infected with African Horse Sickness virus

A

True

167
Q

Zebras are more resistant to African Horse Sickness than horses

A

True

168
Q

Immunized horses may develop a chronic, febrile form of the African Horse Sickness

A

True

169
Q

Rotaviruses infect only mammalian hosts

A

False

170
Q

Avian orthoreoviruses usually cause disease in adult birds

A

False

171
Q

Tenosynovitis is one of the most typical manifestations of Avian orthoreovirus infections

A

True

172
Q

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

A

True

173
Q

The Infectious Bursal Disease virus (IBDV) is very sensitive to detergents

A

False

174
Q

IBDV serotype 2 is used for immunisation of chicken against Infectious Bursal Disease

A

False

175
Q

Clinical manifestations of Infectious Bursal Disease are seen mainly in chicken between the age of 3 - 6 weeks.

A

True

176
Q

Moderately attenuated (“hot”) IBDV vaccines are used for the immunisation of young chicken without yolk immunity

A

False

177
Q

All known strains of the Classical Swine Fever virus are of high virulence

A

False

178
Q

CSFV may cause reproductive disorders

A

True

179
Q

Haemorrhages are the most typical lesions of acute Classical Swine Fever

A

True

180
Q

The Classical Swine Fever may appear in a milder form in wild boar than in domestic swine

A

True

181
Q

CSFV may survive in frozen meat for months

A

True

182
Q

Shedding of CSFV begins 1 to 2 days after the appearance of clinical signs

A

False

183
Q

CSFV can cause central nervous signs only in suckling piglets

A

False

184
Q

Erysipelas and Porcine circovirus 2 infections may cause clinical signs and pathology lesions similar to Classical Swine Fever

A

True

185
Q

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

A

True

186
Q

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

A

True

187
Q

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

A

True

188
Q

Rift Valley Fever may cause high lethality in young ruminants

A

True

189
Q

In Europe, the ticks are the most important means in the transmission of the ASF virus

A

False

190
Q

In case of ASF infection, viraemia can last for months

A

True

191
Q

Infection by moderately virulent ASF results in high mortality of sows

A

True

192
Q

In acute ASF the leading pathological lesion is haemorrhage

A

True

193
Q

FMD virus can be transferred by frozen meat

A

True

194
Q

FMD virus cannot be isolated in cell culture

A

False

195
Q

FMD virus is genetically and serologically uniform

A

False

196
Q

The main reservoirs of FMD virus are cattle and buffalo

A

True

197
Q

FMD virus is carried in the tonsils, lymphatic tissues and hoof of the infected animal

A

True

198
Q

FMD erosions are characteristic with tattered edge and red base

A

True

199
Q

FMD infection in young animals leads to myocarditis

A

True

200
Q

Vaccination against FMD can prevent the infection

A

False

201
Q

VES is more contagious than FMD

A

False

202
Q

VES can be easily differentiated from FMD by the character of the vesicles

A

False

203
Q

Virulent systemic Feline calicivirus causes more severe symptom in kittens

A

False

204
Q

FCV infection results in a two-phase fever

A

True

205
Q

The hemorrhage in RHD is the result of virus multiplication in the liver

A

True

206
Q

In RHD pathology we can see hemorrhages and infarcts in the kidney

A

True

207
Q

Noroviruses may be zoonotic

A

True

208
Q

The Avian hepatitis E is zoonotic

A

False

209
Q

The Infectious Bursitis virus has more than one virulence variants

A

True

210
Q

The Infectious Bursitis virus causes anaemia

A

True

211
Q

The Infectious Bursitis virus can be isolated on CAM

A

True

212
Q

There is no vaccine available against Infectious Bursitis virus

A

False

213
Q

Teschen and Talfan disease are caused by different virulence variants of the same virus

A

True

214
Q

Porcine Teschovirus encephalomyelitis virus is shed in the faeces

A

True

215
Q

Asymptomatic pigs can shed the Porcine Teschovirus encephalomyelitis virus

A

True

216
Q

Porcine Teschovirus encephalomyelitis virus replicates in the gut

A

True

217
Q

Swine Vesicular Disease virus cannot survive in the environment

A

False

218
Q

Swine Vesicular Disease virus causes viraemia

A

True

219
Q

Swine Vesicular Disease virus can cause vesicles on the snout

A

True

220
Q

The mortality of Swine Vesicular Disease is generally above 50%

A

False

221
Q

Encephalomyocarditis virus has a narrow host range

A

False

222
Q

Rodents can maintain Encephalomyocarditis virus infection

A

True

223
Q

Encephalomyocarditis virus can cause necrosis of the heart muscle

A

True

224
Q

Encephalomyocarditis virus is a zoonosis

A

True

225
Q

Trypsin-sensitive avian Orthoreoviruses can cause respiratory disease

A

True

226
Q

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

A

True

227
Q

Avian Rotaviruses can cause tenosynovitis

A

False

228
Q

Avian Orthoreoviruses can cause germinative (ovogen) infection

A

True

229
Q

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

A

True

230
Q

Rotaviruses can cause chronic enteritis and persistent infection

A

False

231
Q

Bluetongue causes transient infection in cattle

A

False

232
Q

Bluetongue vaccines induce serotype-specific immunity

A

True

233
Q

African Horse Sickness was transported to Europe by migratory birds

A

False

234
Q

African Horse Sickness can cause encephalitis

A

False

235
Q

African Horse Sickness is a notifiable (communicable) disease in Europe

A

True

236
Q

African Horse Sickness can cause lung oedema

A

True

237
Q

Orthoreoviruses can cause encephalitis in cattle

A

False

238
Q

Avian Orthoreoviruses can cause inapparent infections in poultry

A

True

239
Q

Avian Orthoreoviruses can cause Poult enteritis-mortality syndrome (PEMS)

A

True

240
Q

Infectious tenosynovitis can be prevented by vaccination

A

True

241
Q

Togavirus-caused Encephalomyelitis of horses occurs frequently worldwide

A

False

242
Q

The host range of Horse Encephalomyelitis Togaviruses is wide

A

True

243
Q

American Horse Encephalomyelitis most frequently cause clinical signs is birds, horses, and humans

A

True

244
Q

Humans are not susceptible to Horse Encephalomyelitis Togaviruses

A

False

245
Q

Tick-borne encephalomyelitis mainly occurs clinically in humans

A

True

246
Q

Tick-borne encephalomyelitis occurs throughout Europe and Asia

A

True

247
Q

Tick-borne encephalomyelitis exists as natural foci infections

A

True

248
Q

Ruminants are long term carries of tick-borne encephalomyelitis virus

A

False

249
Q

West Nile Fever practically is restricted to Africa

A

False

250
Q

The most important maintaining hosts of West Nile Fever virus are water birds

A

True

251
Q

Clinical signs of West Nile Fever are most frequently seen in birds, horses and humans

A

True

252
Q

In West Nile fever virus, neurological signs develop only in a small percentage of the diseased animals

A

True

253
Q

BVD clinically is mostly seen in cattle from 6 to 24 months of age

A

True

254
Q

BVD virus can cause severe damage to foetuses in pregnant cows

A

True

255
Q

Only cattle is susceptible to BVD virus

A

False

256
Q

Border Disease appears as foetal damage in pregnant ewes

A

True

257
Q

Classical Swine Fever virus is shed with faces when boutons appear in the intestines

A

False

258
Q

Classical Swine Fever virus can cause nervous symptoms only in suckling piglets

A

False

259
Q

Classical Swine Fever virus can cause immunosuppression in pigs

A

True

260
Q

Classical Swine Fever can be eradicated from wild boar populations by oral vaccination

A

False

261
Q

Classical Swine Fever virus is rarely complicated by secondary infections

A

False

262
Q

Classical Swine Fever can be diagnosed easily by the characteristic symptoms and lesions

A

False

263
Q

Domestic swine stocks are free of Classical Swine Fever in most of the European countries

A

True

264
Q

Classical Swine Fever usually appears in a milder form in wild boar than in domestic pigs

A

True

265
Q

Akabane disease is zoonotic

A

False

266
Q

Schmallenberg disease is zoonotic

A

False

267
Q

Rift Valley Fever is zoonotic

A

True

268
Q

Nairobi sheep disease is zoonotic

A

True

269
Q

Despite being enveloped, the resistance of ASF virus in the environment is high

A

True

270
Q

The moderately virulent ASF virus does not cause fever

A

False

271
Q

In case of infection by highly virulent ASF virus, we can see skin necrosis as a clinical sign

A

False

272
Q

In chronic cases of ASF, spleen hyperplasia is a leading pathological lesion

A

True

273
Q

FMD virus retains its infectivity for more than a month in manure

A

True

274
Q

Genotype C of the FMD virus is the most frequently detected worldwide

A

False

275
Q

Swine shed about 1000-3000% higher FMD virus concentration comparing to ruminants

A

True

276
Q

Hedgehogs are susceptible to FMD

A

True

277
Q

Shedding of FMD virus starts 3 days after the infection

A

False

278
Q

FMD virus is shed by semen too

A

True

279
Q

Vaccinated animals can carry FMD virus

A

True

280
Q

Comparing to cattle, swine show milder vesicular symptoms in FMD

A

True

281
Q

Vesicular exanthema of swine is of sea-mammal origin

A

True

282
Q

We can differentiate VES from FMD by the lack of lameness

A

False

283
Q

Infected cats carry Feline calicivirus at least for a month

A

True

284
Q

Feline calicivirus may be shed by urine and feces

A

True

285
Q

Vaccine against RHD is produced in rabbits

A

True

286
Q

RHD causes airborne infection

A

True

287
Q

Sapoviruses cause gastrointestinal infections in human

A

True

288
Q

Hepatitis E Virus causes characteristic clinical symptoms in swine

A

False

289
Q

The resistance of infectious bursitis virus is very high

A

True

290
Q

The Infectious Bursitis virus spreads by mosquitoes

A

False

291
Q

IBDV causes immunosuppression in chicken between 2-8 weeks of age

A

True

292
Q

By disinfection of the eggshell we can prevent IBDV infection

A

True

293
Q

Porcine Teschovirus Encephalomyelitis is mainly caused by serotype 1 strains

A

True

294
Q

Porcine Teschovirus Encephalomyelitis virus is maintained by rodents

A

False

295
Q

Porcine Teschovirus Encephalomyelitis virus can infect pigs and cattle

A

False

296
Q

Porcine Teschovirus Encephalomyelitis virus cannot survive in the environment

A

False

297
Q

Avian Encephalomyelitis is caused by a double stranded DNA virus

A

False

298
Q

Chickens are susceptible to Avian Encephalomyelitis virus

A

True

299
Q

Germinative infection is a way of spreading of Avian Encephalomyelitis virus

A

True

300
Q

Tremor is a common clinical sign of Avian Encephalomyelitis

A

True

301
Q

Per os infection is a common way of infection with Duck Hepatitis A virus

A

True

302
Q

Germinative infection is a common way of infection with Duck Hepatitis A virus

A

False

303
Q

Clinical signs of Duck Hepatitis can be seen in all age groups

A

False

304
Q

Spasmodical paddling is a frequent clinical sign of Duck Hepatitis

A

True

305
Q

Orbiviruses spread by droplet (aerogen) infection

A

False

306
Q

Bluetongue disease occurs only in Africa

A

False

307
Q

Bluetongue is named after the cyanosis of the tongue

A

True

308
Q

Bluetongue is named after the pseudo-melanosis of the tongue

A

False

309
Q

Bluetongue infects also horses and dogs

A

False

310
Q

Bluetongue is also foetopathic

A

True

311
Q

Ibaraki disease virus immunises against Bluetongue

A

False

312
Q

Horse Encephalosis appeared several times in Europe between 2006 and 2009

A

False

313
Q

African Horse Sickness is spread by ticks

A

False

314
Q

African Horse Sickness is zoonotic

A

False

315
Q

African Horse Sickness is prevented in Africa by combined vaccines

A

True

316
Q

Horse Encephalosis is endemic in Africa

A

True

317
Q

The subacute form of African Horse Sickness is causing oedema formation and heart failure

A

True

318
Q

Rotaviruses cause mainly respiratory signs in cattle

A

False

319
Q

Orthoreoviruses can cause pneumoenteritis in cattle

A

True

320
Q

Avian orthoreo- and rotaviruses can cause runting-stunting syndrome in chickens

A

True

321
Q

American Horse Encephalomyelitis viruses represent several types and subtypes

A

True

322
Q

Vectors of American Horse Encephalomyelitis Togaviruses are mosquitoes

A

True

323
Q

Main means of control of American Horse Encephalomyelitis are mosquito control and vaccines

A

True

324
Q

Vaccines cannot be used to prevent Togavirus-caused encephalomyelitis of horse

A

False

325
Q

Tick-borne encephalomyelitis most frequently is seen clinically in ruminants

A

False

326
Q

Occasionally Tick-borne encephalomyelitis virus can be transmitted to humans via consuming raw milk

A

True

327
Q

Tick-borne encephalomyelitis occurs seasonally

A

True

328
Q

For humans inactivated Tick-borne encephalomyelitis virus vaccines are also available

A

True

329
Q

West Nile Fever occurs worldwide

A

True

330
Q

Vectors of West Nile Fever virus are different mosquito species

A

True

331
Q

The host range of West Nile virus is very wide

A

True

332
Q

Humans are not susceptible to West Nile Disease virus

A

False

333
Q

BVD virus exists in several serotypes

A

False

334
Q

BVD infection of pregnant cows can result in delivery of immunotolerant persistently infected calves

A

True

335
Q

Bulls can shed BVD virus for long time in semen, without showing any clinical signs

A

True

336
Q

Both attenuated live and inactivated vaccines are used in eradication of BVD

A

True

337
Q

Acute Classical Swine Fever can cause hemorrhagic pneumonia

A

True

338
Q

Classical Swine Fever virus doesn’t induce neutralising antibody production

A

False

339
Q

Classical Swine Fever virus is inactivated in chilled meat at -20°C

A

False

340
Q

Classical Swine Fever virus can cause immunotolerance in swine

A

True

341
Q

Classical Swine Fever virus is immunosuppressive

A

True

342
Q

Only DIVA vaccines should be used to prevent Classical Swine Fever in swine stocks

A

False

343
Q

Classical Swine Fever virus causes lympho-histiocytic encephalitis in pigs

A

True

344
Q

Classical Swine Fever virus causes lympho-histiocytic encephalitis in carnivores

A

False

345
Q

Rift-Valley Fever caused human epidemics in Africa

A

True

346
Q

Ticks are reservoirs and vectors of the Schmallenberg virus

A

False

347
Q

Schmallenberg virus was transported to Europe from South-America

A

False

348
Q

Nairobi sheep disease can cause hemorrhagic enteritis among sheep

A

True

Epidemiology (12 decks)

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