Reoviruses Flashcards
1
Q
1) Orbiviruses spread by droplet (aerosol) infection
A
false
2
Q
2) Orbiviruses can be cultivated in vivo by inoculation of embryonated eggs
A
true
3
Q
3) Genetic reassortments may cause significant antigenic changes in reovirus strains
A
true
4
Q
4) Orbiviruses are serologically uniform
A
false
5
Q
5) Orbiviruses are mainly arboviruses
A
true
6
Q
6) Reoviruses are sensitive to lipid solvents and detergents.
A
false
7
Q
1) Orthoreoviruses frequently cause tenosynovitis of horses
A
false
8
Q
2) Orthoreoviruses can cause pneumoenteritis in calves
A
true
9
Q
3) Orthoreoviruses can cause pneumoenteritis in cattle
A
true
10
Q
4) Avian orthoreo –and rotaviruses can cause runting sunting syndrome in chickens
A
true
11
Q
5) Avian orthoreoviruses cause mainly nephritis and encephalitis
A
false
12
Q
6) Infection of adult birds with orthoreoviruses usually remains subclinical
A
true
13
Q
7) Avian orthoreoviruses usually transmitted by germinative route
A
true
14
Q
8) Avian orthoreoviruses can cause damages in the bursa Fabricii
A
true
15
Q
9) Mammalian orthoreoviruses can cause pneumoenteritis only in suckling animals
A
false
16
Q
10) Orthoreovirus can cause tenosynovitis in pigs
A
false
17
Q
11) Avian orthoreoviruses usually cause disease in adult birds
A
false
18
Q
12) Tenosynovitis is one of the most frequent manifestations of avian orthoreovirus infections
A
true
19
Q
13) Trypsin-sensititive avian orthoreovirus usually cause respiratory disease in birds
A
true
20
Q
14) Yolk immunity does not influence the efficacy of vaccination against avian orthoreovirus
A
false
21
Q
15) Avian orthoreoviruses may cause necrotic foci in the visceral organs of birds
A
true
22
Q
16) Avian orthoreoviruses can cause inapparent infection in poultry
A
true
23
Q
17) Orthoreoviruses can be detected by haemagglutination test
A
true
24
Q
18) Trypsin resistant strains of Avian orthoreoviruses frequently cause diarrhoea
A
true
25
19) Trypsin sensitive strains of avian orthoreoviruses frequently cause tenosynovitis
true
26
20) Horses usually develop lethal hemorrhagic enteritis in Orthoreovirus infections
false
27
21) Infection of adult birds with Orthoreoviruses usually remains subclinical
true
28
22) Orthoreoviruses can cause encephalitis in cattle
false
29
23) Avian orthoreoviruses can cause poult enteritis-mortality syndrome (PEMS)
true
30
24) Infectious tenosynovitis can be prevented by vaccination
true
31
25) Avian orthoreoviruses infect only via inhalation and parenterally
false
32
26) Avian orthoreoviruses only infect via PO infections
false
33
27) All Avian orthoreoviruses can spread germinatively
true
34
28) Helicopter disease causes feather problems
true
35
29) Orthoreovirus infections cause immunosuppression in birds
true
36
30) Tenosynovitis is a frequent sign of Avian Orthoreovirus infection
true
37
31) Orthoreovirus mainly infects younger animals
true
38
32) Orthoreovirus causes respiratory and GI disease.
true
39
33) Tenosynovitis is caused by only one Orthoreovirus
false
40
34) Orthoreoviruses frequently cause tenosynovitis of horses
false
41
1) Rotaviruses are sensitive to environmental conditions
false
42
2) Rotavirus infection is sporadic within the herd
false
43
3) Rotavirus only infects mammals
false
44
4) Clinical signs of rotavirus infection are usually seen in animals older than 2 weeks of age
false
45
5) Swine is not susceptible to rotavirus infection
false
46
6) Rotaviruses predispose to E.Coli infection in suckling piglets
true
47
7) Rotaviruses are shed in the faeces in high titres
true
48
8) Rotavirus infection results in high mortality
false
49
9) Avian rotaviruses are transmitted by germinative infection
false
50
10) Losses due to rotavirus infection of young animals can be prevented by colostrum feeding
true
51
11) Rotaviruses usually cause enteritis in young (1-2 weeks old) animals
true
52
12) Rotaviruses damage the mucosa of the large intestines
false
53
13) Rotaviruses are serologically uniform
false
54
14) Rotaviruses are typically transmitted via the faecal oral route
true
55
15) Swine rotavirus infection is frequently followed by E. coli secondary infection in piglets
true
56
16) Avian rotaviruses can cause tenosynovitis
false
57
17) Rotaviral enteritis of calves can be prevented by immunization of pregnant cows
true
58
18) Rotaviruses can cause chronic enteritis and persistent infection
false
59
19) Rotaviruses cause mainly respiratory signs in cattle
false
60
20) Rotaviruses mainly cause respiratory disease in older animals
false
61
21) Rotaviruses typically cause respiratory disease in 3-6 month old calves
false
62
22) Rotavirus is species specific
false
63
23) Rotaviruses frequently cause tenosynovitis in birds
false
64
24) Vaccination of horses in the Americas is used to prevent rotavirus infections
true
65
1) Bluetongue is present only in tropical areas
false
66
2) Rodents serve as reservoirs of bluetongue
false
67
3) Ibaraki disease is clinically very similar to bluetongue
true
68
4) Ibaraki disease virus can be used to immunize cattle against bluetongue
false
69
5) Lameness is a frequent symptom of bluetongue in sheep
true
70
6) Bluetongue virus can cause bloody diarrhoea in lambs
true
71
7) Bluetongue is named after cyanosis of the tongue
true
72
8) The bluetongue virus is vectored by midges/ gnats
true
73
9) Cattle can carry the bluetongue virus for years without symptoms
true
74
10) Wild birds play the most important role in the distribution of bluetongue
false
75
11) In Europe vaccination of small ruminants against bluetongue is mandatory
false
76
12) Bluetongue virus is also foetopathic
true
77
13) Bluetongue virus may cause foetal developmental problems
true
78
14) Lameness and abortion are signs of bluetongue
true
79
15) Bluetongue occurs only in Africa and Australia
false
80
16) Bluetongue is transmitted by ticks
false
81
17) Bluetongue virus is typically vectored by ticks
false
82
18) Bluetongue can be transmitted by semen
true
83
19) Goats are more resistant to the bluetongue than sheep
true
84
20) Goats are not susceptible to bluetongue virus
false
85
21) Vaccination against Bluetongue results serotype specific immunity
true
86
22) Bluetongue disease occurs only in Africa
false
87
23) Bluetongue virus infects also horses and dogs
true, should be false
88
24) Endothelial damages are the most important causes of the clinical signs of bluetongue
true
89
25) A serotype 8 of bluetongue virus strain caused severe outbreak in Europe in 2006-2009
true
90
26) Bluetongue outbreaks mainly occur is summer and autumn
true
91
27) Sheep are less sensitive to Bluetongue than swine
false
92
28) Bluetongue causes transient infection in cattle
false
93
29) Bluetongue vaccines induce serotype-specific immunity
true
94
30) Bluetongue is named after the pseudo-melanosis of the tongue.
false
95
31) Bluetongue infects also horses and dogs
false
96
32) Ibaraki disease virus immunizes against bluetongue
false
97
33) Bluetongue disease is present only in tropical and sub-tropical countries.
false
98
34) Wild birds are the natural reservoir host of the Bluetongue virus
false
99
35) In utero Bluetongue virus infection may result in immunotolerance
true
100
36) The most severe clinical manifestation of Bluetongue disease is usually seen in goats
false
101
37) Bluetongue is an Orbivirus
true
102
38) Bluetongue primarily spreads with blood sucking insects.
true
103
39) Bluetongue replicates in endothelial cells of blood vessels
true
104
40) The causative agent of Bluetongue multiplies in endothelium
true
105
41) Bluetongue has 24 known serotypes
false
106
42) Bluetongue is an enteral disease of turkeys
false
107
43) Bluetongue causes symptoms mostly in sheep and goat
false
108
44) Bluetongue is not present in Europe
false
109
45) Bluetongue causes skin signs in bovine
true
110
46) Bluetongue also infects pigs
false
111
47) Bluetongue infects all hooved animals
false
112
48) No long-term carrier stage is observed in Bluetongue virus infections
false
113
49) Ruminants and swine are the most important hosts of the Bluetongue virus
false
114
50) Lameness is one of the clinical signs of Bluetongue disease in sheep
true
115
51) Serological cross protection exists between 25 known serotypes of Bluetongue virus
false
116
52) Ibarki disease is a Bluetongue-like disease in Asia and in America
true
117
53) The serotype 8 strain of the bluetongue virus, which emerged in Western Europe, does not cause clinical signs in cattle
false
118
1) The epizootic haemorrhagic fever is observed in the USA in wild deer
true
119
2) Epizootic haemorrhagic disease was described only in Australia so far
false
120
3) Epizootic hemorrhage fever is a Bluetongue-like disease of wild ruminants in America
true
121
1) African horse sickness is mostly a peracute disease
false
122
2) African horse sickness virus is endemic in Russia since 2008
false
123
3) The Infectious equine arthritis and the African horse sickness ay have similar clinical signs
true
124
4) Oedemas and haemorrhages are the most frequent lesions in African horse sickness
true
125
5) African horse sickness is spread by ticks
false
126
6) African horse sickness is zoonotic
false
127
7) Frothy nasal discharge is a characteristic sign of African horse sickness
true
128
8) The subacute form of African horses sickness is causing oedema formation and heart failure
true
129
9) Encephalitis is the most frequent sign of African horse sickness
false
130
10) Acute form of African horse sickness occurs mainly in zebras and horses
false
131
11) Carnivores are susceptible to African horse sickness
true
132
12) Occasionally carnivores may get infected with African horse sickness virus
true
133
13) The natural reservoirs of the African horse sickness virus are mainly zebras
true
134
14) Subcutaneous oedema is a frequent symptom of subacute African horse sickness
true
135
15) Zebras are more resistant to African horse sickness than horses
true
136
16) Immunized horses may develop a chronic febrile form of the African horse sickness
true
137
17) Zebras are not susceptible to African horse sickness
false
138
18) Wild birds play the most important role in the spreading of African horse sickness
false
139
19) The chronic form of African horse sickness may be similar to EIA
true
140
20) African horse sickness is a communicable disease
true
141
21) In the pathogenesis of African horse sickness, viraemia lasts longer in horse than in zebras
false
142
22) The African horse sickness is endemic in Europe and in the USA.
false
143
23) The signs of chronic African Horse Sickness and Equine Infectious anaemia may be similar
true
144
24) The natural reservoirs of the African Horse Sickness virus are mainly zebras
true
145
25) African horse sickness was transported to Europe by migratory birds
false
146
26) African horse sickness can cause encephalitis
false
147
27) African horse sickness is a notifiable (communicable) disease in Europe
true
148
28) African horse sickness can cause lung oedema
true
149
29) African horse sickness is prevented in Africa by combined vaccines
true
150
30) African Horse Sickness is a frequent disease, distributed worldwide
false
151
31) Respiratory signs are the most frequent symptoms in acute African Horse Sickness.
true
152
32) The differential diagnosis of African Horse Sickness and Tetanus is rather complicated
false
153
33) African Horse Sickness is spread primarily by “small mosquitos”.
false
154
34) Carriers for African Horse Sickness are zebras and donkeys.
true
155
35) African Horse Sickness is not present in Europe today
true
156
36) African Horse Sickness is caused by an arbovirus.
true
157
37) African Horse Sickness is caused by Orbivirus
true
158
38) The most characteristic post mortem lesion in African Horse Sickness is haemorrhages and oedema
false, should be true
159
39) Reservoir for African Horse Sickness is zebras and donkeys
false
160
40) African Horse Sickness is presented mainly per-acutely in donkeys
false
161
41) African Horse Sickness virus only infect horses
false
162
42) Horses are more susceptible than zebra in African Horse Sickness
true
163
43) Haemorrhagic meningoencephalitis is the most frequent sign of the African Horse Sickness
false
164
44) The African Horse Sickness virus may infect dogs too
true
165
45) African horse sickness is a world-wide distributed and frequent disease
false
166
46) The subacute form of the African horse sickness is mainly characterized by oedematisation and cardiac dysfunctions
true
167
1) Horse encephalosis is endemic in Africa
true
168
2) Equine encephalosis can result in abortion
true
169
3) Equine encephalosis is transmitted by mosquitoes
true
170
4) Equine encephalosis causes the most severe clinical signs in Zebras
false
171
5) Horse encephalosis occurs only in America
false
172
6) Equine encephalosis causes high mortality
false
173
7) Attenuated and inactivated vaccines are available against equine encephalosis
false
174
8) Horse encephalosis appeared several times in Europe between 2006 and 2009
false
175
9) Midges are the main vectors of the Equine encephalosis virus
true
