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Epi PQ FINAL Virology > Midterm 3 > Flashcards

Midterm 3 Flashcards

1
Q

Influenza viruses are sensitive to detergents

A

True

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2
Q

Certain antiviral drugs can inhibit the influenza A virus neuraminidase activity

A

True

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3
Q

At least 16 different serotypes of Influenza A haemagglutinin are known so far

A

True

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4
Q

The AG structure of influenza viruses is very stable

A

False

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5
Q

Racing horses must be yearly vaccinated against equine influenza

A

True

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6
Q

In dogs mainly H3N8 strains cause influenza

A

True

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7
Q

Waterfowl are more sensitive to avian influenza than chicken and turkey

A

False

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8
Q

Highly pathogenic avian influenza strains may cause encephalitis in birds

A

True

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9
Q

The PPR is endemic in North and south america

A

False

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10
Q

The canine distemper virus can infect only dogs

A

False

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11
Q

The outcome of canine distemper virus infection is very much determined by the immune response of the dog

A

True

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12
Q

In utero canine distemper virus may result in abortion

A

True

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13
Q

The virulence of ND strains can be determined by sequence analysis of virus genes

A

True

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14
Q

ND virus cannot survive long in the environment

A

False

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15
Q

ND is typically vectored by ticks

A

False

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16
Q

Only inactivated vaccines can be used against ND virus

A

False

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17
Q

Parainfluenza 2 virus is frequent in the etiology of kennel cough

A

True

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18
Q

The natural hosts of hendravirus are flying foxes

A

True

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19
Q

Hendravirus can cause encephalitis in horses and humans

A

True

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20
Q

Avian metapneumovirus can cause respiratory signs and egg production problems

A

True

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21
Q

Porcine respiratory coronavirus infection usually provides cross-protection from transmissible gastroenteritis virus infections

A

True

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22
Q

Transmissible gastroenteritis virus can infect only swine

A

False

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23
Q

Bovine coronavirus may cause respiratory signs in calves

A

True

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24
Q

Canine alphacoronavirus type 2 may cause hemorrhagic disease in 1-2 month old pups

A

True

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25
Q

Feline enteric coronavirus usually causes severe, hemorrhagic enteritis in kittens

A

False

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26
Q

Cell-mediated hypersensitivity plays a major role in the background on non-effusive feline infectious peritonitis

A

True

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27
Q

Infectious bronchitis virus can cause inflammatory lesions in the oviduct of chicken

A

True

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28
Q

Infectious bronchitis virus vaccines are used against turkey enteritis

A

False

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29
Q

Pregnant mares usually abort in the acute phase of viral arteritis

A

True

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30
Q

Equine viral arteritis is diagnosed by agarose-gel immunodiffusion (coggins)

A

False

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31
Q

Porcine reproductive and respiratory virus (PRRSV) propagates in lymphatic cells

A

True

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32
Q

PRRSV infection may influence the reproductive performance of boars

A

True

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33
Q

In the case of vesicular stomatitis vesicles are formed only at the place of entry of the virus

A

True

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34
Q

Salivation is a CX of vesicular stomatitis

A

True

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35
Q

Vesicular stomatitis cannot be prevented with vaccines

A

False

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36
Q

Vesicular stomatitis is a zoonosis

A

True

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37
Q

The rabies virus is a uniform virus without serotypes, genotypes, subtypes

A

False

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38
Q

Only carnivorous animals are susceptible to the rabies virus

A

false

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39
Q

High amount of rabies virus is shed in the saliva

A

True

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40
Q

Sylvatic rabies is maintained by foxes in europe

A

True

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41
Q

Bovine enzootic leukosis virus can be transmitted with lymphoid cells

A

True

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42
Q

Iatrogenic infection is frequent in the epidemiology of bovine enzootic leukosis

A

True

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43
Q

The target cells of the bovine enzootic leukosis virus are T lymphocytes

A

False

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44
Q

The typical signs of bovine enzootic leukosis can be seen in cattle under 1 year

A

false

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45
Q

All avian leukosis viruses are oncogenic

A

True

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46
Q

Avian leukosis viruses are shed in the feces

A

True

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47
Q

There is no germinative infection in the case of avian leukosis virus

A

False

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48
Q

The target cells of the avian leukosis are B lymphocytes

A

True

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49
Q

Borna disease is widespread all over the world

A

True

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50
Q

Only horses are susceptible to borna disease virus

A

False

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51
Q

Pneumonia is the main CS of borna disease

A

False

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52
Q

Most animals showing CS of borna disease die due to it

A

True

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53
Q

Infective prions are resistant to proteases

A

True

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54
Q

Only a few animals show CS of BSE in an infected herd

A

True

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55
Q

BSE prions are shed in the feces and it is transmitted to other cattle in the herd

A

false

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56
Q

The incubation time of BSE is 3-5 years

A

True

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57
Q

Anthrax cannot occur in dogs and cats

A

False

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58
Q

Bacillus anthracis generally infects animals per os

A

True

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59
Q

Anthrax is an acute or peracute disease in cattle

A

True

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60
Q

Anthrax cannot be prevented with vaccination

A

False

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61
Q

Blackleg is caused by clostridium septicums

A

False

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62
Q

In the case of sheep, blackleg is generally a consequence of wound infection

A

True

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63
Q

Edema in the muscles is a typical CS of blackleg

A

True

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64
Q

Attenuated vaccines are used for the prevention of blackleg

A

False

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65
Q

Tetanus occurs only in horses

A

False

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66
Q

The tetanus toxin cleaves the synaptobrevin

A

True

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67
Q

The CS of tetanus are inducible

A

True

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68
Q

Tetanus cannot be prevented with vaccine

A

False

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69
Q

Extracellular enzymes are important factors of pathogenic staphylococci

A

True

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70
Q

Morels disease is mainly seen in suckling lambs

A

false

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71
Q

Diarrhea is the mian CS of morels disease

A

false

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72
Q

Isolation of the agent from lesions of morels disease confirms the diagnosis

A

true

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73
Q

Listeriosis can only be seen in sheep

A

false

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74
Q

Abortion is the most frequent form of listeriosis in sheep

A

false?

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75
Q

Aerogenic infection is the most important form of infection with listeria in sheep

A

false

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76
Q

Listeriosis is spreading fast from one animal to the other

A

false

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77
Q

Caseous lymphadenitis is caused by nitrate positive strains of corynebacterium pseudotuberculosis

A

T, positive strains in horse, negative in ruminant

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78
Q

Caseous lymphadenitis is only seen in suckling lambs

A

F

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79
Q

Arthritis can be a CS of caseous lymphadenitis

A

t

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80
Q

Vaccination can be used for the prevention of caseous lymphadenitis

A

t

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81
Q

The natural hosts of influenza A virus are humans

A

f

82
Q

Certain antiviral drugs can inhibit the M2 ion channels of the influenza A virus

A

t

83
Q

the amino acid sequence of the protease cleavage site of the influenza A virus haemagglutinin may influence the virulence

A

t

84
Q

At least 9 different serotypes of influenza A virus neuraminidase are know so far

A

t

85
Q

In horses predominantly H3N8 influenza A strains can cause disease

A

t

86
Q

It is forbidden to use AB for TX of influenza in horses

A

f

87
Q

Swine-adapted influenza A viruses cannot cause disease in humans

A

f

88
Q

The vaccination of poultry against avian influenza is mandatory

A

f

89
Q

Bovine parainfluenza virus 3 is frequent endemic in cattle farms

A

t

90
Q

It is mandatory to vaccinate cattle against rinderpest

A

f

91
Q

Erosive lesions in the oral cavity are frequent signs of PPR

A

t

92
Q

Nowadays rinderpest virus is used as heterologous vaccine against PPR virus

A

f

93
Q

Dogs infected with distemper virus usually become life-long carriers and shedders

A

f

94
Q

Clinical manifestation of distemper is mainly seen in 3-4 months of age

A

t

95
Q

Canine parainfluenzavirus 2 frequently causes encephalitis in old dogs

A

f

96
Q

Feline morbillivirus infection may be associated with tubule-interstitial nephritis in cats

A

t

97
Q

Wild birds may be reservoir hosts of influenza viruses

A

t

98
Q

Wild birds may be reservoir hosts of newcastle disease virus

A

t

99
Q

Wild birds may be reservoir hosts of avian metapneumovirus

A

t

100
Q

Wild birds may be reservoir hosts of nipah viruses

A

f

101
Q

TGE is more severe in piglets than adults

A

t

102
Q

PRCoV is a modification of the haemagglutinating encephalomyelitis virus

A

f

103
Q

Porcine epidemic diarrhea is present only in africa and the middle east

A

f

104
Q

Haemagglutinating encephalomyelitis virus is typically vectored by mosquitoes

A

f

105
Q

Bovine Co viruses can cause diarrhea only in calves up to one month of age

A

f

106
Q

Canine Co viruses frequently cause encephalitis and hepatitis in puppies

A

f

107
Q

FIP develops only in adult cats

A

f

108
Q

Decreased serum Alb/Glb ratio may indicate FIP

A

t

109
Q

Mares are frequently lifelong carriers of equine arteritis virus

A

f

110
Q

SC edema is a freq CS of EVA

A

t

111
Q

PRRSV can cause abortion only in the advanced stage of pregnancy

A

f

112
Q

Only inactivated vaccine can be used for the prevention against PRRSV

A

f

113
Q

Rhabdovirus are very resistant and they can survive in the environment for several weeks

A

f

114
Q

VS occurs in america

A

t

115
Q

The host range of VS and FMD is the same

A

t

116
Q

Sand flies and midges can transmit VS virus

A

t

117
Q

Urban forms of rabies is maintained by dogs and cats

A

t

118
Q

Rabies virus is spreading in the infected animals perineural

A

t

119
Q

Rabies virus is shed in the saliva before SX appear

A

t

120
Q

The incubation of rabies is generally less than 1 week,

A

f

121
Q

Retroviruses show high host specificity

A

t

122
Q

Retrovirus are generally not carried for more than a month

A

f

123
Q

Malignant transformation is a frequent consequence of retrovirus infection

A

t

124
Q

Retroviruses generally cannot survive in the environment for a long time

A

t

125
Q

infection of poultry herds with avian leukosis is widespread

A

t

126
Q

Cs of avian leukosis generally appear in day old chicken

A

f

127
Q

Lymphoid leukosis is the most frequent form of avian leukosis

A

t

128
Q

The main way of prevention of avian leukosis is vaccination using attenuated strains

A

f

129
Q

EIA is a vector borne disease

A

t

130
Q

EIA virus causes persistent infection

A

t

131
Q

There is no immune reaction in the case of EIA

A

f

132
Q

EIA is zoonotic

A

f

133
Q

Scrapie occurs only in britain and ireland

A

f

134
Q

There is genetic predisposition in the case of scrapie

A

t

135
Q

Scrapie prion is shed by the infected animals in different discharges

A

t

136
Q

Itching is a freq CX of scrapie

A

t

137
Q

Anthrax cannot be seen in europe anymore

A

f

138
Q

Capsule is a virulent factor of anthrax

A

t

139
Q

CO2 is needed for the spore formation of the agent of anthrax

A

f

140
Q

Pigs are more susceptible to anthrax than sheep

A

f

141
Q

Cl. chauvoei is the agent of malignant edema

A

f

142
Q

Malignant edema is generally a consequence of a wound infection

A

t

143
Q

Frozen food is a predisposing factor of bradsot

A

t

144
Q

CSF is a predisposing factor of koves disease

A

t

145
Q

Lamb dysentery can be seen in lambs around weaning

A

f

146
Q

Lesions of lamb dysentery can be seen in the small intestine

A

t

147
Q

Isolation of Cl.perfringens from the gut confirms the Dx of lamb dysentery.

A

f

148
Q

Lambs have to be vaccinated with attenuated vaccine in order to prevent lamb dysentery

A

f

149
Q

Staph in rabbits typically occurs in newborn rabbits

A

f

150
Q

Aerogenic infection is common in the case of staph in rabbits

A

t

151
Q

Arthritis can be a CS of staph infection in rabbits

A

t

152
Q

Abscess formation can be a CS of staph in rabbits

A

t

153
Q

Neuraminidase is a virulence factor of erysipelothrix rhusiopathiae

A

t

154
Q

erysipelothrix rhusiopathiae can be carried and shed by asymptomatic pigs

A

t

155
Q

Only pigs can be infected with erysipelothrix rhusiopathiae

A

f

156
Q

Purulent pneumonia is a typical form of acute erysipelas

A

f

157
Q

Ulcerative lymphangitis of horses is caused by nitrate (-) strains of corynebacterium pseudotuberculosis

A

F (postivie in horse, negative in others

158
Q

Ulcerative lymphangitis of horses can be a consequence of umbilical infection

A

t

159
Q

Abscess formation can be seen in the case of ulcerative lymphangitis of horses

A

t

160
Q

Ulcerative lymphangitis of horses is typically an acute disease

A

f

161
Q

Influenza viruses infect predominantly lymphatic cells

A

f

162
Q

Influenza viruses are sensitive to lipid solvents

A

t

163
Q

Influenza viruses are transmitted exclusively via nasal discharges

A

f

164
Q

Genetic segment reassortments are responsible for the antigenic drift in seasonal influenza endemics

A

t

165
Q

Influenza viruses do not cause viraemia in horses

A

f

166
Q

In case of a swine influenza outbreak, all sick and in-contact animal must be destroyed

A

f

167
Q

Cats and dogs are resistant to H5N1 influenza A virus

A

f

168
Q

Birds may shed influenza viruses via their faeces

A

t

169
Q

Paramyxoviruses cannot be isolated in cell cultures

A

f

170
Q

Parainfluenza 3 virus in cattle frequently causes oral mucosal erosions and oedema

A

True (maybe, says IBR is differential which has erosions)

171
Q

The Rinderpest virus is vectored by ticks

A

false

172
Q

The Peste des petit ruminants virus is a zoonotic agent

A

f

173
Q

Canine distemper virus frequently infects via the airborne route

A

t

174
Q

Liver dystrophy and hepatitis are the most characteristic lesions of canine distemper

A

f

175
Q

Due to the inhibitory effect of maternal antibodies, dogs should not be vaccinated against canine distemper under 6 months of age

A

f

176
Q

Canine parainfluenza virus 2 is typically transmitted by vertical route

A

t

177
Q

Lentogenic Newcastle disease virus strains can infect only chicken but not wild birds

A

f

178
Q

Lentogenic Newcastle disease virus strains can increase their virulence through mutations

A

false i think

179
Q

Because Newcastle disease is a notifiable disease, preventive vaccination of birds is not allowed

A

f

180
Q

Hendra virus can cause haemorrhagic nephritis in humans and in dogs

A

f

181
Q

Egg production problems may be signs of avian influenza

A

false i think

182
Q

Egg production problems may be signs of Newcastle disease

A

t

183
Q

Egg production problems may be signs of metapneumovirus infections

A

t

184
Q

Egg production problems may be signs of infectious bronchitis

A

t

185
Q

Haemagglutinating encephalomyelitis cannot be differentiated from Teschen disease in sows

A

false i think

186
Q

In cattle coronavirus may cause respiratory or enteric disease

A

t

187
Q

Approximately 90% of Feline enteric coronavirus infected cats will subsequently develop peritonitis

A

f

188
Q

The Feline infectious peritonitis virus and the Canine respiratory coronavirus are antigenically closely related to each other

A

false i think

189
Q

Geldings are asymptomatic, long-term carriers of the Equine arteritis virus

A

f

190
Q

Equine arteritis is diagnosed by agarose gel immunodiffusion test (Coggins test)

A

f

191
Q

The porcine reproductive and respiratory syndrome virus (PRRSV) is present world-wide

A

t

192
Q

The PRRSV can cause abortion only in gilts during their first pregnancy

A

f

193
Q

Vesicular stomatitis virus has several serotypes

A

t

194
Q

Vesicular stomatitis can occur in horses, cattle and swine

A

t

195
Q

Vesicular stomatitis virus cannot induce good immunity

A

f

196
Q

Most animals die in vesicular stomatitis

A

f

197
Q

Paralysis is typical clinical sign of rabies

A

t

198
Q

Generally furious rabies can be seen in cats

A

t

199
Q

Interstitial pneumonia is generally seen in post mortem in the case of rabies

A

f

200
Q

Attenuated rabies vaccines are used for the per os vaccination of foxes

A

t

Epi PQ FINAL Virology (123 decks)

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