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EPI.o.i.d > Reoviridae > Flashcards

Reoviridae 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

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3
Q

Genetic reassortments may cause significant antigenic changes in reovirus strains

A

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4
Q

Orbiviruses are serologically uniform

A

F

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5
Q

Orbiviruses are mainly arboviruses

A

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6
Q

Reoviruses are sensitive to lipid solvents and detergents

A

F

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7
Q

Orthoreoviruses can cause pneumoenteritis in calves

A

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8
Q

Orthoreoviruses can cause pneumoenteritis in cattle

A

T

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9
Q

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

A

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10
Q

Avian orthoreoviruses cause mainly nephritis and encephalitis

A

F

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11
Q

Avian orthoreoviruses usually transmitted by germinative route

A

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12
Q

Avian orthoreoviruses can cause damages in the bursa Fabricii

A

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13
Q

Mammalian orthoreoviruses can cause pneumoenteritis only in suckling animals

A

F

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14
Q

Orthoreovirus can cause tenosynovitis in pigs

A

F

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15
Q

Avian orthoreoviruses usually cause disease in adult birds

A

F

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16
Q

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

A

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17
Q

Trypsin-sensititive avian orthoreovirus usually cause respiratory disease in birds

A

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18
Q

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

A

F

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19
Q

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

A

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20
Q

Avian orthoreoviruses can cause inapparent infection in poultry

A

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21
Q

Orthoreoviruses can be detected by haemagglutination test.

A

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22
Q

Trypsin resistant strains of Avian orthoreoviruses frequently cause diarrhoea

A

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23
Q

Trypsin sensitive strains of avian orthoreoviruses frequently cause tenosynovitis

A

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24
Q

Horses usually develop lethal hemorrhagic enteritis in Orthoreovirus infections

A

F

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25
Q

Infection of adult birds with Orthoreoviruses usually remains subclinical

A

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26
Q

Orthoreoviruses can cause encephalitis in cattle

A

F

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27
Q

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

A

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28
Q

Infectious tenosynovitis can be prevented by vaccination

A

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29
Q

Avian orthoreoviruses infect only via inhalation and parenterally

A

F

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30
Q

Avian orthoreoviruses only infect via PO infections

A

F

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31
Q

All Avian orthoreoviruses can spread germinatively

A

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32
Q

Helicopter disease causes feather problems

A

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33
Q

Orthoreovirus infections cause immunosuppression in birds

A

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34
Q

Tenosynovitis is a frequent sign of Avian Orthoreovirus infection

A

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35
Q

Orthoreovirus mainly infects younger animals

A

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36
Q

Orthoreovirus causes respiratory and GI disease

A

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37
Q

Tenosynovitis is caused by only one Orthoreovirus

A

F

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38
Q

Orthoreoviruses frequently cause tenosynovitis of horses

A

F

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39
Q

Rotaviruses are sensitive to environmental conditions

A

F

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40
Q

Rotavirus infection is sporadic within the herd

A

F

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41
Q

Rotavirus only infects mammals

A

F

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42
Q

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

A

F

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43
Q

Swine is not susceptible to rotavirus infection

A

F

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44
Q

Rotaviruses predispose to E.Coli infection in suckling piglets

A

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45
Q

Rotaviruses are shed in the faeces in high titres

A

T

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46
Q

Rotavirus infection results in high mortality

A

F

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47
Q

Avian rotaviruses are transmitted by germinative infection

A

F

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48
Q

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

A

T

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49
Q

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

A

T

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50
Q

Rotaviruses damage the mucosa of the large intestines

A

F

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51
Q

Rotaviruses are serologically uniform

A

F

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52
Q

Rotaviruses are typically transmitted via the faecal oral route

A

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53
Q

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

A

T

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54
Q

Avian rotaviruses can cause tenosynovitis

A

F

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55
Q

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

A

T

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56
Q

Rotaviruses can cause chronic enteritis and persistent infection

A

F

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57
Q

Rotaviruses cause mainly respiratory signs in cattle

A

F

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58
Q

Rotaviruses mainly cause respiratory disease in older animals

A

F

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59
Q

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

A

F

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60
Q

Rotavirus is species specific

A

F

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61
Q

Rotaviruses frequently cause tenosynovitis in birds

A

F

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62
Q

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

A

T

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63
Q

Bluetongue is present only in tropical areas

A

F

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64
Q

Rodents serve as reservoirs of bluetongue

A

F

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65
Q

Ibaraki disease is clinically very similar to bluetongue

A

T

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66
Q

Ibaraki disease virus can be used to immunize cattle against bluetongue

A

F

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67
Q

Lameness is a frequent symptom of bluetongue in sheep

A

T

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68
Q

Bluetongue virus can cause bloody diarrhoea in lambs

A

T

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69
Q

Bluetongue is named after cyanosis of the tongue

A

T

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70
Q

The bluetongue virus is vectored by midges/ gnats

A

T

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71
Q

Cattle can carry the bluetongue virus for years without symptoms

A

T

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72
Q

Wild birds play the most important role in the distribution of bluetongue

A

F

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73
Q

In Europe vaccination of small ruminants against bluetongue is mandatory

A

F

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74
Q

Bluetongue virus is also foetopathic

A

T

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75
Q

Bluetongue virus may cause foetal developmental problems

A

T

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76
Q

Lameness and abortion are signs of bluetongue

A

T

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77
Q

Bluetongue occurs only in Africa and Australia

A

F

78
Q

Bluetongue is transmitted by ticks

A

F

79
Q

Bluetongue virus is typically vectored by ticks

A

F

80
Q

Bluetongue can be transmitted by semen

A

T

81
Q

Goats are more resistant to the bluetongue than sheep

A

T

82
Q

Goats are not susceptible to bluetongue virus

A

F

83
Q

Vaccination against Bluetongue results serotype specific immunity

A

T

84
Q

Bluetongue disease occurs only in Africa

A

F

85
Q

Bluetongue virus infects also horses and dogs

A

F

86
Q

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

A

T

87
Q

A serotype 8 of bluetongue virus strain caused severe outbreak in Europe in 2006-2009

A

T

88
Q

Bluetongue outbreaks mainly occur is summer and autumn

A

T

89
Q

Sheep are less sensitive to Bluetongue than swine

A

F

90
Q

Bluetongue causes transient infection in cattle

A

F

91
Q

Bluetongue vaccines induce serotype-specific immunity

A

T

92
Q

Bluetongue is named after the pseudo-melanosis of the tongue

A

F

93
Q

Bluetongue infects also horses and dogs

A

F

94
Q

Ibaraki disease virus immunizes against bluetongue

A

F

95
Q

Bluetongue disease is present only in tropical and sub-tropical countries

A

F

96
Q

Wild birds are the natural reservoir host of the Bluetongue virus

A

F

97
Q

In utero Bluetongue virus infection may result in immunotolerance

A

T

98
Q

The most severe clinical manifestation of Bluetongue disease is usually seen in goats

A

F

99
Q

Bluetongue is an Orbivirus

A

T

100
Q

Bluetongue primarily spreads with blood sucking insects

A

T

101
Q

Bluetongue replicates in endothelial cells of blood vessels

A

T

102
Q

The causative agent of Bluetongue multiplies in endothelium

A

T

103
Q

Bluetongue has 24 known serotypes

A

F

104
Q

Bluetongue is an enteral disease of turkeys

A

F

105
Q

Bluetongue causes symptoms mostly in sheep and goat

A

F

106
Q

Bluetongue is not present in Europe

A

F

107
Q

Bluetongue causes skin signs in bovine

A

T

108
Q

Bluetongue also infects pigs

A

F

109
Q

Bluetongue infects all hooved animals

A

F

110
Q

No long-term carrier stage is observed in Bluetongue virus infections

A

F

111
Q

Ruminants and swine are the most important hosts of the Bluetongue virus

A

F

112
Q

Lameness is one of the clinical signs of Bluetongue disease in sheep

A

T

113
Q

Serological cross protection exists between 25 known serotypes of Bluetongue virus

A

F

114
Q

Ibarki disease is a Bluetongue-like disease in Asia and in America

A

T

115
Q

The serotype 8 strain of the bluetongue virus, which emerged in Western Europe, does not cause clinical signs in cattle

A

F

116
Q

The epizootic haemorrhagic fever is observed in the USA in wild deer

A

T

117
Q

Epizootic haemorrhagic disease was described only in Australia so far

A

F

118
Q

Epizootic hemorrhage fever is a Bluetongue-like disease of wild ruminants in America

A

T

119
Q

African horse sickness is mostly a peracute disease

A

F

120
Q

African horse sickness virus is endemic in Russia since 2008

A

F

121
Q

he Infectious equine arthritis and the African horse sickness ay have similar clinical signs

A

T

122
Q

Oedemas and haemorrhages are the most frequent lesions in African horse sickness

A

T

123
Q

African horse sickness is spread by ticks

A

F

124
Q

African horse sickness is zoonotic

A

F

125
Q

Frothy nasal discharge is a characteristic sign of African horse sickness

A

T

126
Q

The subacute form of African horses sickness is causing oedema formation and heart failure

A

T

127
Q

Encephalitis is the most frequent sign of African horse sickness

A

F

128
Q

Acute form of African horse sickness occurs mainly in zebras and horses

A

F

129
Q

Carnivores are susceptible to African horse sickness

A

T

130
Q

Occasionally carnivores may get infected with African horse sickness virus

A

T

131
Q

Subcutaneous oedema is a frequent symptom of subacute African horse sickness

A

T

132
Q

Zebras are more resistant to African horse sickness than horses

A

T

133
Q

Immunized horses may develop a chronic febrile form of the African horse sickness

A

T

134
Q

Zebras are not susceptible to African horse sickness

A

F

135
Q

Wild birds play the most important role in the spreading of African horse sickness

A

F

136
Q

The chronic form of African horse sickness may be similar to EIA

A

T

137
Q

African horse sickness is a communicable disease

A

T

138
Q

In the pathogenesis of African horse sickness, viraemia lasts longer in horse than in zebras

A

F

139
Q

The African horse sickness is endemic in Europe and in the USA

A

F

140
Q

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

A

T

141
Q

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

A

T

142
Q

African horse sickness was transported to Europe by migratory birds

A

F

143
Q

African horse sickness can cause encephalitis

A

F

144
Q

African horse sickness is a notifiable (communicable) disease in Europe

A

T

145
Q

African horse sickness can cause lung oedema

A

T

146
Q

African horse sickness is prevented in Africa by combined vaccines

A

T

147
Q

African Horse Sickness is a frequent disease, distributed worldwide

A

F

148
Q

Respiratory signs are the most frequent symptoms in acute African Horse Sickness

A

T

149
Q

The differential diagnosis of African Horse Sickness and Tetanus is rather complicated

A

F

150
Q

African Horse Sickness is spread primarily by “small mosquitos”.

A

F

151
Q

Carriers for African Horse Sickness are zebras and donkeys

A

T

152
Q

African Horse Sickness is not present in Europe today

A

T

153
Q

African Horse Sickness is caused by an arbovirus

A

T

154
Q

African Horse Sickness is caused by Orbivirus

A

T

155
Q

The most characteristic post mortem lesion in African Horse Sickness is haemorrhages and oedema.

A

T

156
Q

Reservoir for African Horse Sickness is zebras and donkeys

A

F

157
Q

African Horse Sickness is presented mainly per-acutely in donkeys

A

F

158
Q

African Horse Sickness virus only infect horses

A

F

159
Q

Horses are more susceptible than zebra in African Horse Sickness

A

T

160
Q

Haemorrhagic meningoencephalitis is the most frequent sign of the African Horse Sickness

A

F

161
Q

The African Horse Sickness virus may infect dogs too

A

T

162
Q

African horse sickness is a world-wide distributed and frequent disease

A

F

163
Q

The subacute form of the African horse sickness is mainly characterized by oedematisation and cardiac dysfunctions

A

T

164
Q

Horse encephalosis is endemic in Africa

A

T

165
Q

Equine encephalosis can result in abortion

A

T

166
Q

Equine encephalosis is transmitted by mosquitoes

A

T

167
Q

Equine encephalosis causes the most severe clinical signs in Zebras

A

F

168
Q

Horse encephalosis occurs only in America

A

F

169
Q

Equine encephalosis causes high mortality

A

F

170
Q

Attenuated and inactivated vaccines are available against equine encephalosis

A

F

171
Q

Horse encephalosis appeared several times in Europe between 2006 and 2009

A

F

172
Q

Midges are the main vectors of the Equine encephalosis virus

A

T

173
Q

Bursitis virus targets the premature B lymphocytes

A

T

174
Q

The orthohepevirus A causes clinical symptoms only in human

A

T

175
Q

The Orthohepevirus A can be zoonotic

A

T

176
Q

The avian hepatitis E is a zoonotic disease

A

F

177
Q

The avian hepatitis E causes drop in egg production

A

T

178
Q

Hepatitis E virus causes characteristic clinical symptoms in swine

A

F

179
Q

Avian nephritis is caused by astroviruses

A

T

180
Q

The mortality of avian nephritis is 50-60%

A

T

181
Q

Avian nephritis replicates in the gut

A

T

182
Q

Broilers are regularly vaccinated against avian nephritis virus

A

F

183
Q

Urate deposition is a postmortem lesion of avian nephritis

A

T

184
Q

Clinical signs of avian nephritis can be seen in the first four weeks of life

A

T

185
Q

Avian nephritis virus usually causes diseases in chickens of 1-3 weeks of age

A

T

186
Q

Avian nephritis is more frequent in waterfowl than in chicken

A

F

187
Q

Avian nephritis virus caused by a picornavirus

A

F

188
Q

Only chickens are susceptible to avian nephritis virus

A

T

189
Q

Avian nephritis virus is transmitted by rodents

A

F

190
Q

Chickens are frequently seropositive for avian nephritis

A

T

191
Q

Attenuated vaccines are used for the prevention of chicken from avian nephritis virus

A

F

EPI.o.i.d (50 decks)

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