Epi Mix AC 5601-5800 Flashcards

1
Q

The infectious bursal disease virus is transmitted only vertically

A

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2
Q

Anaemia and depression are frequent signs of infectious bursal disease

A

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3
Q

Only inactivated vaccines can be used against infectious bursal disease

A

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4
Q

The infectious bursal disease virus is very sensitive to detergents

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5
Q

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

A

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6
Q

The Infectious bursal disease virus (IBDV) is very resistant in the environment

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7
Q

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

A

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8
Q

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

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9
Q

Young chicken can be immunized only with inactivated IBDV vaccines

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10
Q

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

A

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11
Q

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

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12
Q

Fever, diarrhea and anemia are signs of the Infectious Bursal Disease

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13
Q

Vaccines provide high level of protection against all IBDV strains

A

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14
Q

Clinical manifestations of infectious bursal disease are seen mainly in chicken between the age of 3 and 6 weeks

A

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15
Q

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

A

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16
Q

The infectious bursitis virus has more than one virulence variants

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17
Q

The infectious bursitis virus causes anaemia

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18
Q

The infectious bursitis virus can be isolated on CAM

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19
Q

There is no vaccine available against infectious bursitis virus

A

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20
Q

The resistance of infectious bursitis virus is very high

A

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21
Q

The infectious bursitis virus spreads by mosquitoes

A

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22
Q

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

A

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23
Q

By disinfection of the eggshell we can prevent IBDV infection

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24
Q

Infectious bursal disease causes severe illness, mainly in waterfowl

A

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25
The most frequent sign of infectious bursal disease is lameness
f
26
Only attenuated live vaccines are effective against infectious bursal disease
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27
Several antigenic and virulence variants of infectious bursal disease virus are known
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28
The infectious bursitis is usually seen in 3 to 8 weeks-old flocks
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29
The most frequent sign of infectious bursal disease is lameness due to the inflammation of the subtendinal bursae
f
30
The infectious bursitis virus is inactivated within 1-2 days in the environment
f
31
A frequent sign of the infectious bursitis is encephalitis
f
32
The infectious bursitis virus does not cause any damage in chickens under the age of two weeks
f
33
Influenzaviruses have segmented genome
t
34
HPAI and LPAI strains differ in the number of basal amino acids in the HA protein
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35
HA protein of influenza viruses is responsible for the attachment to the cell
t
36
The M2 protein of influenza viruses serves as an ion channel important in the decapsidation
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37
Antigenic drift means serials of point mutations in the HA and NA genes
t
38
The NA protein in the influenza virus is responsible for the release from the infected cells
t
39
Enzymatic cleavage of the HA protein is needed for the influenza virus penetration into the cell
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40
Genetic reassortment of human and animal influenza viruses result in the occurrence of new human influenza strains
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41
Bats have an important role in the epidemiology of influenza
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42
Antigenic shift is behind the influenza pandemics
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43
Influenza viruses are classified into genera by their HA and NA proteins
f
44
Influenza causes persistent infection in donkey
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45
The serotype of influenza viruses is determined by their HA and NA proteins
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The influenza viruses cause respiratory signs in sea mammals
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The host range of influenza virus is determined by the NA protein
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48
The bird to human host switch of influenza virus is mediated by swine
t
49
The main host of influenza is the swine
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50
In humans inactivated vaccines are used for the immunisation against influenza
t
51
Antigenic drift is behind the seasonal influenza epidemics
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52
Antigenic shift means the reassortment of the influenzavirus genome segments
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53
Influenzaviruses are sensitive to drying out
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54
For the in vitro propagation of influenza viruses embryonated eggs is used
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55
The high virulence of some influenza A viruses is the result of mutations in the HA gene
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56
Dogs are susceptible to horse origin influenza strains
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57
The HPAI strains can cause CNS Signs
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HPAI causes blood vessel damages and generalised infections
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59
The HPAI strains are usually developed from the H5 and H7 influenza viruses
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60
The LPAI causes immunosuppression
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61
Cat is susceptible to human seasonal influenza
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62
HPAI strains are mutations of LPAI strains
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63
HPAI strains belong into a certain haemagglutinin types
f
64
Influenzas Causes enteric symptoms in human
f
65
Anti-neuraminidase drugs inhibit the decapsidation of influenza viruses
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66
Swine recovered from influenza should not be kept for breeding
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67
Influenza causes high morbidity but low mortality in swine
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68
The HPAI causes skin haemorrhages in swine
f
69
Swine influenza outbreaks occur usually during summer
f
70
The mortality of swine influenza is high
f
71
Swine influenza causes high morbidity rate
t
72
To prevent complications of swine influenza penicillin injections are given to sick pigs
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73
Swine influenza is easily transmitted to people
f
74
To prevent complications of swine influenza, antibiotics used
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75
In swine all influenza variants can be detected
f
76
In a horse influenza outbreak all infected horses must be killed
f
77
The generalized symptoms of horse influenza are result of the interferon response
t
78
Racehorses should be vaccinated before the influenza season
f
79
Breeding mares should be vaccinated before the influenza season
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80
Influenza causes persistent infection in horses
f
81
The eggs produced in LPAI infected flock can be hatched
t
82
The HPAI infection can be unambiguously differentiated from Newcastle disease by the clinical signs
f
83
The HPAI strains can cause clinical signs in waterfowl
t
84
In poultry farms LPAI may be endemic without clinical signs
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85
Waterfowl can carry the influenza viruses for long time
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86
Influenza viruses are shed by birds exclusively in the nasal discharge
f
87
Avian influenza is zoonotic
t
88
The virulence of avian influenza is determined by the i.v. pathogeny index and mortality
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89
Avian influenza can switch directly to human and cause epidemics with high case numbers as result of human to human transmission
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90
In birds all influenza variants can be detected
t
91
Avian influenza of high economic impact is caused by HPAI strains
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92
Avian influenza virus is primarily spread through bronchial discharge and aerogenic route
f
93
Avian influenza spread by bronchial discharge
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94
All Bunyaviruses are transmitted by mosquitoes
f
95
Bunyaviruses cause oral infection
f
96
The virus causing severe fever and thrombocytopenia syndrome is transmitted by tick
t
97
Several bunyaviruses are zoonotic agents
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98
Serological cross-reactions are frequent between related bunyaviruses
t
99
All bunyaviruses are vectored by insects
f
100
All bunyaviruses are vectored by ticks
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101
Orthobunyaviruses are transmitted by haematophagous arthropods
t
102
Several virus species belong to Bunyaviridae family, many present only in tropical regions
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103
Bunyaviruses are typically arboviruses
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104
Bunyaviriuses has good antigens and good immune reaction
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105
The Aino virus causes foetal development problems and abortion in sheep
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106
Akabane virus is zoonotic
f
107
Akabane virus causes foetal damages in dogs
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108
Akabane disease virus causes foetal damages in sheep
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109
Abortions and foetal malformations are the most typical signs of Akabane disease
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110
The Akabane disease is mainly seen in geese
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111
The Akabane disease can cause abortion in sheep
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112
The main symptoms of the akabane disease are foetal development disorders
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113
The main symptoms of akabane disease are the malformation of the fetus
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114
Akabane, Aino and Schmallenberg viruses cause similar disease in ruminants
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115
Akabane occurs in South-West Africa and is a disease of swine
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116
Schmallenberg virus causes disease only in Suffolk sheep breed
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117
Schallenberg virus causes foetal damages in humans
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118
Schmallenberg virus causes foetal development problems more frequently in cattle than in sheep
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119
Schmallenberg virus is present worldwide
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120
Schmallenberg virus causes foetal damages in pigs
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121
Schmallenberg virus causes foetal damages in sheep
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122
Schmallenberg virius associated disease as 1st observed in 2011 in certain Western European countries
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The Schmallenberg virus causes severe disease in humans
f
124
The acute signs of Schmallenberg virus infection in cattle are fever and reduced milk production
t
125
Rodents are the reservoir hosts of Schmallenberg virus
t
126
In cattle Schmallenberg virus causes transient febrile disease with reduced milk production
t
127
The Schmallenberg virus is a zoonotic agent
f
128
Ticks are reservoirs and vectors of the Schmallenberg virus
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129
Schmallenberg virus was transported to Europe from South-America
f
130
Schmallenberg virus emerged in Western Europe, in 2011, and spread rapidly in ruminants
t
131
In sheep the Schmallenberg virus mainly causes foetal malformations
t
132
Schmallenberg spread by midges vectors
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133
No human case report on Schmallenberg virus
t
134
Pneumonia and abortion are the main signs of Schmallenberg virus infection in sheep
f
135
Midges are the main vectors of Schmallenberg virus
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136
Human is a competent host of Rift Valley fever virus i.e. the viraemic titre is high enough to infect the vector
t
137
The Rift valley fever virus damages the blood vessels thus causes haemorrhages
t
138
Wild rabbits are reservoirs of Rift valley fever virus
f
139
Rift valley fever is a human only disease
f
140
The rift valley fever virus causes foetal damages in sheep
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141
Certain European mosquito species are competent vectors of Rift Valley fever virus
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142
Rift Valley fever may cause high lethality in young ruminants
t
143
Rift Valley fever virus is a zoonotic agent
t
144
The Rift Valley fever virus can cause reproductive disorders in cattle and sheep
t
145
Necrotic hepatitis is a lesion of Rift Valley fever
t
146
Rift-valley fever caused human epidemics in Africa
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147
Rift Valley fever virus caused severe human outbreaks in Africa and in the Arab peninsula
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148
The principle vectors of the rift valley disease are gnats.
f
149
Rift valley fever outbreaks are most frequently seen in horses
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150
Rift valley fever virus may cause 100% mortality in young susceptible animals
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151
In enzootic regions vaccines are used for the prevention of rift valley fever
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152
Nairobi sheep disease causes generalized infection in the animals
t
153
Vaccines are available in endemic regions to prevent Nairobi sheep disease
t
154
Nairobi sheep disease leads to abortion in the infected pregnant animals
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155
Nairobi sheep disease causes haemorrhagic enteritis in the infected animals
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156
Nairobi disease virus causes foetal damages in sheep
t
157
The Nairobi sheep disease can cause abortion in sheep.
t
158
The most frequent sign of the Nairobi sheep disease is encephalitis
f
159
Haemorrhagic gastroenteritis is a lesion of Nairobi sheep disease
t
160
Nairobi sheep disease is zoonotic
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161
Nairobi sheep disease can cause haemorrhagic enteritis among sheep
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162
The most important symptom of the Nairobi sheep disease is nephritis
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163
Nairobi disease occurs mainly in sheep
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164
The leading symptom of Nairobi disease is renal insufficiency
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165
The Nairobi sheep disease is vectored by ticks
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166
Nairobi sheep disease primarily causes pathological changes in the kidney (renal insufficiency
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167
Small rodents serve as reservoir hosts of Hantaviruses
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168
Hantaviruses can cause renal failure in human
t
169
Hantaviruses may cause respiratory disease in humans
t
170
Hantaviruses causes haemorrhagic fever in humans
t
171
Hantaviruses cause hemorrhagic fevers in rodents
f
172
Hanta viruses can cause renal symptoms in humans
t
173
Mainly rodents are the natural reservoir of hanta viruses
t
174
Hanta viruses are naturally maintained by rodents
t
175
In domestic animals Hanta viruses typically cause liver dystrophy
f
176
Hanta virus infected people may develop severe renal failure
t
177
Rodents are reservoir for Hanta virus
t
178
Hanta virus cause renal disorders in humans
t
179
Hanta viruses cause encephalitis in horses
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180
The Crimean-congo haemorrhagic fever is a human disease with headache, muscle pain and skin haemorrhages
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181
Crimean-Congo Haemorrhagic fever virus is tick born
t
182
Arterivirus, the virulence is highly variable
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183
The equine viral arteritis is caused by an arterivirus
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184
Serological tests can NOT be used for laboratory detection of equine viral arteritis
f
185
Red blood cells can be used for laboratory detection of equine viral arteritis virus
f
186
Nasal fluid can be used for laboratory detection of equine viral arteritis virus
t
187
A semen sample can be used for laboratory detection of equine viral arteritis virus
t
188
Equine arteritis virus is very resistant to physical damages
f
189
Equine viral arteritis is usually asymptomatic
t
190
In cases of equine viral arteritis, the rate of seroconverted animals increases with age
t
191
The main target cells of equine viral arteritis are macrophages
t
192
Equine Viral arteritis (EVA) virus can affect donkeys
t
193
The persistence of EVA virus within one herd is usually caused by the stallions
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194
EVA is transmitted by sexual and aerogenic pathways
t
195
EVA can cause persistent virus carrying
t
196
Equine Viral Arteritis virus can infect by inhalation
t
197
Vaccine against Equine Viral Arteritis is never used in Europe
f
198
The Equine Viral Arteritis is caused by retrovirus
f
199
The equine viral arteritis virus cannot damage the wall of blood vessels
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200
The equine viral arteritis virus rarely causes asymptomatic infection
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