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Epidemiology > Midterm 2 (2019) > Flashcards

Midterm 2 (2019) Flashcards

1
Q

The African Swine Fever Virus can be inactivated by irradiation

A

True

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2
Q

The ASF causes haemadsorption in cell cultures

A

True

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3
Q

The ASF infects the swine per os

A

True

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4
Q

The ASF replicates in lymphocytes

A

False

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5
Q

In ASF cases, abortion is never observed

A

False

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6
Q

In acute ASF cases, the leading pathological finding are the haemorrhages

A

True

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7
Q

Vaccines are available to be used in the control of ASF

A

False

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8
Q

ASF is shed in the saliva of the infected animals

A

True

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9
Q

The FMD virus is very sensitive to the environmental conditions

A

False

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10
Q

The FMD virus can retain its infectivity in dried milk for months

A

True

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11
Q

All serotypes of FMD can be detected world-wide

A

False

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12
Q

Swine shed FMD virus for a shorter time comparing to cattle

A

True

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13
Q

Hedgehog is susceptible to FMD

A

True

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14
Q

The primary replication site for FMD is the tongue mucosa

A

False

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15
Q

After immune response, the FMD vesicles can recover fully

A

True

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16
Q

For laboratory tests, FMD samples should be submitted in buffered transport medium

A

True

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17
Q

Talfan Disease is a disease of pigs

A

True

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18
Q

The clinical signs of Talfan Disease are more severe than that of Teschen Disease

A

False

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19
Q

Talfan Disease can be seen in animals below 4 months of age

A

True

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20
Q

Flaccid paralysis is a typical clinical sign of Talfan Disease

A

True

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21
Q

Pigs are infected with Swine Vesicular Disease Virus per os

A

True

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22
Q

Swine Vesicular Disease Virus can cause vesicles on the snout of pigs

A

True

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23
Q

Haemorrhages can be seen post mortem in the case of Swine Vesicular Disease

A

False

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24
Q

The mortality of Swine Vesicular Disease is very high, it can be 50-60%

A

False

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25
Q

Duck Hepatitis A virus is shed in the faeces

A

True

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26
Q

The resistance of Duck Hepatitis A is high

A

True

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27
Q

Germinative infection can happen in the case of Duck Hepatitis A

A

False

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28
Q

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

A

False

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29
Q

The primary source of VES infection is sea-origin feed

A

True

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30
Q

Feline Calicivirus infection can cause the limping of kittens

A

True

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31
Q

RHD virus can be propagated in cell culture

A

False

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32
Q

The Orthohepevirus A causes clinical symptoms only in human

A

True

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33
Q

The Bursitis Virus is very sensitive to the environmental conditions

A

False

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34
Q

The Bursitis Virus causes per os infection

A

True

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35
Q

Clinical signs of Gumboro Disease can be seen in chickens older than 8 weeks

A

False

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36
Q

Bursitis Virus infection results in immunosuppression

A

True

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37
Q

Togavirus are transmitted by mosquitoes

A

True

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38
Q

Birds serve as reservoirs for Venezuelan Horse Encephalomyelitis Virus

A

False

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39
Q

Equine Encephalomyelitis Viruses can cause asymptomatic infections

A

True

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40
Q

Equine Encephalomyelitis Viruses are zoonotic

A

True

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41
Q

Reoviruses are sensitive to lipid solvents and detergents

A

False

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42
Q

Orbiviruses are mainly arboviruses

A

True

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43
Q

Bluetongue virus infects also horses and dogs

A

False

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44
Q

Bluetongue virus is also foetopathic

A

True

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45
Q

Vaccination against Bluetongue results serotype specific immunity

A

True

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46
Q

Bluetongue outbreaks mainly occur is summer and autumn

A

True

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47
Q

African Horse Sickness is zoonotic

A

False

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48
Q

Zebras are not susceptible to African Horse Sickness

A

False

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49
Q

Horse Encephalosis is endemic in Africa

A

True

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50
Q

Rotavirus infects only mammals

A

False

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51
Q

Rotaviruses are typically transmitted via the faecal-oral route

A

True

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52
Q

Avian Orthoreoviruses can cause inapparent infection in poultry

A

True

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53
Q

The Louping ill Disease is seen in cattle in Great Britain and Scandinavia

A

False

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54
Q

Serological cross reactions frequently occur between related Flavivirus

A

True

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55
Q

The Tick-borne Encephalitis Virus can be transmitted via consumption of raw milk

A

True

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56
Q

Pestivirus are zoonotic

A

False

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57
Q

In utero infection with non-cytopathic BVDV can cause immunotolerance

A

True

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58
Q

Mucosal Disease can develop in cattle persistently infected with BVDV

A

True

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59
Q

Bovine Neonatal Pancytopenia (BNP) is an immunopathy observed in immunotolerant, BVDV-infected calves

A

False

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60
Q

The Border Disease Virus causes pneumonia in sheep

A

True

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61
Q

Classical Swine Fever can retain its infectivity for 6 months in frozen meat

A

True

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62
Q

CSF causes oronasal infection

A

True

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63
Q

CSF infection results in immunosuppression

A

True

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64
Q

In acute CSF, skin haemorrhages and bloody nasal discharge can be observed

A

True

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65
Q

CSF infection during the first half of pregnancy results in the birth of immunotolerant piglets

A

True

66
Q

During necropsy enlarged bloody lymph nodes can be seen in CSF cases

A

True

67
Q

The boutons in the intestines are characteristic lesions in subacute CSF

A

True

68
Q

In vaccinated herds we mostly see the CSF clinical signs in 6-12 weeks old piglets

A

True

69
Q

All Bunyviruses are vectored by insects

A

False

70
Q

Akabane virus causes foetal damages in dogs

A

False

71
Q

Hantaviruses cause renal failure in human

A

True

72
Q

Nairobi Sheep Disease causes haemorrhagic enteritis in the infected animals

A

True

73
Q

Influenza viruses are classified into genera by their HA and NA proteins

A

False

74
Q

The M2 protein of Influenza Viruses serves as an ion channel important in the decapsidation

A

True

75
Q

The high virulence of some Influenza A viruses is the result of mutations in the HA gene

A

True

76
Q

The NA protein has a role in the Influenza Virus release from the infected cells

A

True

77
Q

Antigenic drift means serials of point mutations in the HA and NA genes

A

True

78
Q

In birds, all influenza variants can be detected

A

True

79
Q

The mortality of swine influenza is high

A

False

80
Q

In poultry farms, LPAI maybe be endemic without clinical signs

A

True

81
Q

The African Swine Fever Virus can be inactivated by 2%NaOh within 1 day

A

True

82
Q

The immune system cannot neutralise the ASF virus by antibodies

A

True

83
Q

The ASF virus infects the swine by air

A

False

84
Q

The ASF virus replicates the bone marrow

A

True

85
Q

Several virulence variants of ASF virus exist

A

True

86
Q

In acute ASF cases, the leading pathological finding is the black and enlarged lymph nodes

A

True

87
Q

Stamping out of the infected herds is applied in the control of ASF

A

True

88
Q

ASF virus is shed in the urine of the infected animals

A

False

89
Q

The FMD virus is very sensitive to acidic pH

A

True

90
Q

The FMD virus can retain its infectivity in frozen milk for months

A

True

91
Q

FMD virus is serologically uniform

A

False

92
Q

Cattle shed FMD virus for a shorter time comparing to swine

A

False

93
Q

Dogs are susceptible to FMD

A

True

94
Q

The primary replication site of FMD is the bone marrow

A

False

95
Q

FMD can be carried for long time in the hoof tissue

A

True

96
Q

For laboratory tests FMD samples should be submitted frozen

A

False

97
Q

Talfan Disease occurs in any age group

A

False

98
Q

Haemorrhages are typical post mortem lesions of Talfan Disease

A

False

99
Q

Paralysis is a clinical sign of Talfan Disease

A

True

100
Q

There is widespread vaccination in Europe for prevention of Talfan Disease

A

False

101
Q

There is germinative spread in the case of Avian Encephalomyelitis

A

True

102
Q

Typical clinical signs of Avian Encephalomyelitis occur up to 5-6 weeks of age

A

True

103
Q

Tremor is a typical clinical sign of Avian Encephalomyelitis

A

True

104
Q

Haemorrhages are frequent post mortem lesions of Avian Encephalomyelitis

A

False

105
Q

Avian Nephritis is more frequent in waterfowl than in chicken

A

False

106
Q

Avian Nephritis is caused by astrovirus

A

True

107
Q

Clinical signs of Avian Nephritis can be seen in the first four weeks of life

A

True

108
Q

Ureate deposition is a post mortem of Avian Nephritis

A

True

109
Q

VES causes mortality in piglets

A

True

110
Q

Feline Calicivirus can cause persisting infection in the tonsils

A

True

111
Q

RHD virus propagates in the liver of the infected animals

A

True

112
Q

The Orthohepevirus A can be zoonotic

A

True

113
Q

Both serotypes of Bursitis Virus are pathogenic

A

False

114
Q

The Bursitis Virus mostly causes germinative infection

A

False

115
Q

Clinical signs of Gumboro disease can be seen in chickens younger than 8 days

A

False

116
Q

Bursitis Virus infection can reduce the efficacy of vaccinations

A

True

117
Q

Togaviruses cause airborne infection

A

False

118
Q

Rodents serve as reservoirs for Venezuelan Horse Encephalomyelitis Virus

A

False

119
Q

Equine Encephalomyelitis Viruses can cause lameness in horses

A

True

120
Q

Equine Encephalomyelitis can cause abortion in human

A

False

121
Q

The Bluetongue virus is vectored by midges/gnats

A

True

122
Q

Bluetongue occurs only in Africa and Australia

A

False

123
Q

Goats are more resistant to the Bluetongue than sheep

A

True

124
Q

In Europe vaccination of small ruminants against Bluetongue is mandatory

A

False

125
Q

The Infectious Equine Arteritis and the African Horse Sickness may have similar clinical signs

A

True

126
Q

African Horse Sickness is spread by ticks

A

False

127
Q

Acute form of African Horse Sickness occurs mainly is zebra and horse

A

False

128
Q

Subcutaneous oedema is a frequent symptom of subacute African Horse Sickness

A

True

129
Q

Rotavirus are shed in the faeces in high titres

A

True

130
Q

Rotavirus predispose to E. coli infection in sucking piglets

A

True

131
Q

Orthoreovirus can cause tenosynovitis in pigs

A

False

132
Q

Mammalian Orthoreoviruses can cause pneumoenteritis only in sucking animals

A

False

133
Q

The main vectors of the Tick-borne Encephalitis Virus are sylvatic mammalian species

A

False

134
Q

The Louping ill was introduced to Australia to control rabbit population

A

False

135
Q

Cytopathic and non-cytopathic biotypes of the Bovine Viral Diarrhoea are known

A

True

136
Q

The BVD virus typically damages endothelial-, epithelial- and lymphatic tissues

A

True

137
Q

Bovine Neonatal Pancytopenia (BNP) is caused by a Bovine Viral Diarrhoea virus

A

False

138
Q

Persistently infected cattle can maintain BVDC in a farm

A

True

139
Q

Bloody diarrhea is a clinical sign of the Mucosal Disease

A

True

140
Q

The Border Disease Virus frequently causes encephalitis in ewes

A

False

141
Q

Classical Swine Fever Virus can be transmitted by raw pork products

A

True

142
Q

CSF can cause transplacental infections

A

True

143
Q

CSF infections result in thrombocytopenia

A

True

144
Q

In acute CSF, at the beginning there is obstipation

A

True

145
Q

CSF infection during the first of half of pregnancy can lead to abortion

A

True

146
Q

During necropsy of acute CSF cases, haemorrhages can be seen in gastric mucosa

A

True

147
Q

In uncomplicated cases of subacute CSF the normal size spleen can be observed

A

True

148
Q

Wild boars play the main role in the maintenance of CSF virus in endemic areas

A

True

149
Q

All Bunyaviruses are vectored by ticks

A

False

150
Q

Akabane Virus is zoonotic

A

False

151
Q

Hantaviruses causes haemorrhagic fever in humans

A

True

152
Q

Nairobi Sheep Disease leads to abortion in the infected pregnant animals

A

True

153
Q

The serotype of influenza viruses is determined by their HA and NA proteins

A

True

154
Q

Influenzaviruses are sensitive to drying out

A

True

155
Q

The virulence of Avian Influenza is determined by the i.v pathogeny index and mortality

A

True

156
Q

The LPAI causes immunosuppression

A

True

157
Q

Antigenic shift means the reassortment of the influenzavirus’ genome segments

A

True

158
Q

In swine, all influenza variants can be detected

A

False

159
Q

Influenza causes persistent infection in horses

A

False

160
Q

In humans, inactivated vaccines are used for the immunisation against influenza

A

True

Epidemiology (12 decks)

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