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Epi > Coronaviruses > Flashcards

Coronaviruses Flashcards

1
Q

1) Human coronavirus was not known before 2020

A

false

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2
Q

2) Recombination between coronaviruses is frequent

A

true

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3
Q

3) Recombination between coronaviruses is rare

A

false

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4
Q

4) Coronaviruses are of two origin: bird or bat

A

true

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5
Q

5) Human coronaviruses usually cause death

A

false

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6
Q

6) Coronaviruses are enveloped viruses

A

true

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7
Q

7) BCoV can cause haemagglutination

A

true

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8
Q

8) IBV can cause haemagglutination

A

false

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9
Q

9) PDCoV can cause haemagglutination

A

false

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10
Q

10) CCoV can cause haemagglutination

A

false

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11
Q

11) TGEV can cause haemagglutination

A

false

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12
Q

12) FIPV can cause haemagglutination

A

false

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13
Q

13) HeCoV can cause haemagglutination

A

true

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14
Q

14) PEDV can cause haemagglutination

A

false

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15
Q

15) Coronaviruses can survive for months in the environment.

A

false

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16
Q

16) Coronaviruses frequently mutate and recombine

A

true

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17
Q

17) Coronaviruses have a weak physical resistance.

A

true

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18
Q

1) In the case of transmissible encephalopathies always degenerative lesions can be seen

A

true

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19
Q

2) In the case of transmissible encephalopathies meningoencephalitis is a typical postmortem lesion

A

false

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20
Q

3) Typical sign of TGE is vomiting and diarrhoea

A

true

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21
Q

4) TGE virus does not reach the mammary gland

A

false

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22
Q

5) TGE virus can replicate in the lungs

A

true

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23
Q

6) The colostral immunity against TGE protects the piglets from the disease

A

true

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24
Q

7) The antibodies against porcine respiratory coronavirus protect the pigs against TGE

A

true

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25
Q

8) TGE virus does not reach foetuses

A

true

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26
Q

9) TGE virus does not cause haemagglutination in vitro

A

true

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27
Q

10) TGE virus can cause haemagglutination in vitro

A

false

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28
Q

11) TGE can cause 100% mortality in newborn piglets

A

true

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29
Q

12) TGE virus causes respiratory signs in piglets

A

false

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30
Q

13) The pathology of TGE is not characteristic

A

true

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31
Q

14) TGE virus does not cause dehydration

A

false

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32
Q

15) The pathognomonic sign of TGE is necrosis in the large intestine

A

false

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33
Q

16) TGE virus can replicate in the intestine

A

true

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34
Q

17) Porcine transmissible gastroenteritis (TGE) is completely eradicated in Europe

A

false

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35
Q

18) TGE causes 100% mortality in sows

A

false

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36
Q

19) The incubation time of TGE is usually 5-7 days.

A

false

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37
Q

20) TGE virus infects the digestive and the respiratory systems

A

true

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38
Q

21) TGEV is widespread and fully replaced porcine epidemic diarrhoea (PED) virus.

A

false

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39
Q

22) Porcine respiratory coronavirus induces cross-protection against PED

A

false

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40
Q

23) Today TGE occurs in an enzootic form

A

true

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41
Q

24) The characteristic symptoms of TGE are vomiting and diarrhoea

A

true

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42
Q

25) TGE infects only swine

A

false

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43
Q

26) TGE virus causes high morbidity

A

true

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44
Q

27) Transmissible gastroenteritis is the more severe in piglets than in adult swine

A

true

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45
Q

28) The mortality caused by transmissible gastroenteritis of swine is the highest among old sows

A

false

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46
Q

29) Transmissible gastroenteritis of swine is a widespread disease, causing high losses in Europe

A

false

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47
Q

30) The lesions of transmissible gastroenteritis of swine are in the gastric mucosa and in the small intestine

A

true

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48
Q

31) Transmissible gastroenteritis of pigs is more frequent in the tropical countries that the moderate climate

A

false

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49
Q

32) There is no cross protection between transmissible gastroenteritis vines and the pulmonary coronavirus of pigs

A

false

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50
Q

33) Transmissible gastroenteritis virus can cause clinical disease only in pigs

A

true

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51
Q

34) Transmissible gastroenteritis virus spreads rapidly in the herd

A

true

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52
Q

35) The epizootic TGEV spreads rapidly

A

true

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53
Q

36) The epizootic TGEV can cause disease mainly in winter

A

true

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54
Q

37) The epizootic TGEV can be transmitted with milk

A

true

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55
Q

38) The epizootic TGEV does not cause viraemia

A

false

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56
Q

39) Transmissible gastroenteritis virus provides cross protection to hemagglutinating coronavirus

A

false

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57
Q

40) TGE mainly cause croupous pneumonia

A

false

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58
Q

41) TGE replaces the respiratory corona virus

A

false

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59
Q

42) TGE appears in Hungary

A

true

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60
Q

43) TGE causes 100% mortality in susceptible piglets under 1 week of age

A

true

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61
Q

44) Porcine transmissible gastroenteritis is completely eradicated in Europe

A

false

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62
Q

45) PED is similar to TGE

A

true

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63
Q

46) The incubation time of TGE is usually 1-3 days

A

true

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64
Q

47) TGE virus infects the digestive and the respiratory system

A

true

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65
Q

48) Only pigs are susceptible to TGE infection

A

false

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66
Q

49) Maternal immunity is essential against TGE infection of piglets

A

true

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67
Q

50) Today TGE occurs in epizootic form

A

true

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68
Q

51) TGE is completely eradicated in Europe

A

false

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69
Q

52) Transmissible gastroenteritis is usually asymptomatic in adults

A

true

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70
Q

53) Transmissible gastroenteritis virus can cause clinical signs in dogs

A

false

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71
Q

54) The Porcine respiratory coronavirus has been evolved from the Transmissible gastroenteritis virus.

A

true

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72
Q

55) Porcine respiratory coronavirus induces cross-protection from transmissible gastroenteritis

A

true

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73
Q

56) TGE infection is devastating at any age

A

false

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74
Q

57) The incubation period of TGE can be as short as 8 hours.

A

false

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75
Q

1) Pig has betacoronavirus

A

true

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76
Q

2) Pigs has only alphacoronavirus

A

false

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77
Q

3) The porcine coronavirus may be avian virus

A

true

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78
Q

4) The antibodies against porcine respiratory coronavirus protect the pigs against porcine epidemic diarrhoea virus

A

false

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79
Q

5) Mutations and recombinations do not occur in swine coronaviruses

A

false

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80
Q

6) PRCoV usually causes pneumonia

A

false

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81
Q

7) Porcine respiratory coronavirus causes acute pneumonia in susceptible piglets

A

false

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82
Q

8) Porcine respiratory coronavirus reduced the prevalence of porcine epidemic diarrhoea

A

false

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83
Q

9) Porcine respiratory coronavirus induces cross protection from TGE

A

true

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84
Q

10) Swine pulmonary corona virus has a high mortality by pneumonia

A

false

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85
Q

11) Porcine respiratory coronavirus is a modification of the Hemagglutinating encephalomyelitis virus

A

false

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86
Q

12) PRCoV gives cross protection against TGEV

A

true

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87
Q

13) PDCoV causes symptoms in pigs.

A

true

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88
Q

14) Porcine respiratory coronavirus causes acute pneumonia in susceptible piglets

A

false

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89
Q

1) Porcine epidemic diarrhea can cause clinical signs in older animals

A

true

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90
Q

2) The virus causing porcine epidemic diarrhea can replicate in the colon

A

true

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91
Q

3) PEDV also occurs in Europe

A

true

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92
Q

4) The porcine epidemic diarrhoea virus causes disease in calf

A

false

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93
Q

5) Porcine epidemic diarrhoea virus can cause disease in humans

A

false

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94
Q

6) The virus causing porcine epidemic diarrhoea can replicate in the heart muscle of the foetus

A

false

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95
Q

7) Porcine epidemic diarrhoea virus causes more severe symptoms in adult than in young piglets

A

false

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96
Q

8) Porcine epidemic diarrhoea is present only in Africa and in the Middle East

A

false

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97
Q

9) Porcine epidemic diarrhoea usually resembles TGE

A

true

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98
Q

10) Porcine epidemic diarrhoea can be transmitted by infected dogs and cats

A

false

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99
Q

11) Porcine epidemic diarrhoea frequently occurs in Europe

A

false

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100
Q

1) PHEV gets to central nervous system via the peripheral nerves

A

true

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101
Q

2) PHEV causes diarrhoea

A

false

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102
Q

3) Hemagglutination encephalomyelitis virus infects young pigs

A

true

103
Q

4) Hemagglutinating encephalomyelitis virus is typically vectored by mosquitoes

A

false

104
Q

5) Hemagglutinating coronavirus can cause encephalomyelitis in suckling piglets.

A

true

105
Q

6) Hemagglutinating coronavirus can cause severe diarrhoea in sows

A

false

106
Q

7) Hemagglutinating coronavirus/Ontario Disease is sporadic in Hungary

A

true

107
Q

8) Hemagglutinating coronavirus of pigs is frequently causing malabsorption in sows

A

false

108
Q

9) The hemagglutinating encephalomyelitis virus multiplicate in hematopoietic stem cells of the bone marrow

A

false

109
Q

10) Hemagglutinating coronavirus is present worldwide

A

true

110
Q

11) The occurrence of coronavirus encephalomyelitis of piglets is usually sporadic

A

true

111
Q

1) Deltacoronavirus of pigs is a bat virus

A

false

112
Q

2) Deltacoronavirus of pigs is an avian virus

A

true

113
Q

1) Bovine coronavirus is generally spreading in summer

A

false

114
Q

2) The bovine coronavirus is of avian origin

A

false

115
Q

3) Bovine coronavirus is betacoronavirus

A

true

116
Q

4) Bovine coronavirus is alphacoronavirus

A

false

117
Q

5) Bovine coronavirus does not cause haemagglutination in vitro

A

false

118
Q

6) Bovine coronavirus remains at the place of the primary replication, and it does not cause viraemia

A

false

119
Q

7) Bovine coronavirus is generally spreading in winter

A

true

120
Q

8) Certain bovine coronaviruses can cause diarrhoea in children

A

false

121
Q

9) Bovine coronaviruses usually infect the respiratory and the digestive systems.

A

true

122
Q

10) Bovine corona virus causes diarrhoea in adult animals mainly in summer

A

false

123
Q

11) Bovine corona virus can cause respiratory problems

A

true

124
Q

12) Cattle can be infected with coronavirus per os

A

true

125
Q

13) Cattle can be infected with coronavirus by inhalation

A

true

126
Q

14) Bovine coronavirus can infect humans

A

false

127
Q

15) Bovine coronaviruses causes mainly respiratory and enteric diseases

A

true

128
Q

16) Certain bovine coronaviruses can affect humans causing clinical signs

A

false

129
Q

17) Coronaviruses mainly cause central nervous disease in cattle

A

false

130
Q

18) Calves can be protected against coronavirus diarrhoea by vaccinations of pregnant cows

A

true

131
Q

12) Mortality of calf enteral coronavirus is high

A

true

132
Q

13) Bovine coronaviruses can cause diarrhoea only in calves up to one month of age

A

false

133
Q

14) Coronavirus diarrhoea occurs in young calves between a few days and 3-4 weeks of age

A

true

134
Q

15) Coronavirus dysentery in calves can be observed up to 3 weeks of age

A

true

135
Q

16) Coronavirus can cause enteritis in calves typically on the first week of life.

A

true

136
Q

17) Calf coronavirus diarrhoea is characterized by several respiratory signs

A

false

137
Q

1) Mortality of calf respiratory coronavirus is high

A

false

138
Q

2) Bovine coronaviruses may cause respiratory signs in calves

A

true

139
Q

1) Winter diarrhoea mainly affects dairy herds

A

true

140
Q

2) Bovine coronavirus can cause diarrhoea in adult animals

A

true

141
Q

3) Coronaviruses cause winter diarrhoea in dairy cows with haemorrhagic access

A

true

142
Q

4) There are no vaccines for the prevention of coronaviral diarrhoea in cattle

A

false

143
Q

5) Winter dysentery causes symptoms in younger age (up to 6 months of age).

A

false

144
Q

6) Coronaviruses cause winter diarrhoea in dairy cows

A

true

145
Q

7) Surviving winter dysentery gives permanent protection only against homologous infection

A

true

146
Q

1) Dogs have only one type of coronavirus

A

false

147
Q

2) The canine coronavirus is a zoonotic agent

A

false

148
Q

3) Canine coronavirus can always cause enteral disease

A

false

149
Q

4) There is a vaccine against canine coronavirus

A

true

150
Q

5) Canine coronavirus (CCOV-1) causes diarrhoea in young, susceptible dogs

A

true

151
Q

6) Canine coronaviruses frequently cause encephalitis and hepatitis in puppies.

A

false

152
Q

7) Canine alphacoronavirus type II may cause haemorrhagic disease in 1-2-month-old pups

A

true

153
Q

8) Canine coronavirus are only present in North America

A

false

154
Q

9) Canine coronavirus vaccines effectively protect from any Canine coronavirus infection.

A

false

155
Q

10) CCoV-IIa infections are endemic worldwide

A

false

156
Q

1) Canine enteral coronavirus and porcine coronavirus are genetically closely relative

A

false

157
Q

2) Dog enteral coronavirus: some strains can cause haemorrhagic diseases in some visceral organs

A

true

158
Q

3) Canine coronavirus-2 infections are characterized by haemorrhagic diarrhoea in puppies

A

true

159
Q

4) There are no protective vaccines available against Canine enteric coronavirus.

A

false

160
Q

1) Canine pantropic coronavirus is an agent of kennel cough

A

false

161
Q

2) Canine pantropic coronavirus causes subnormal temperature

A

false

162
Q

3) Canine pantropic coronaviruses damage only the mucous membranes

A

false

163
Q

4) Canine pantropic coronaviruses causes high fever

A

true

164
Q

5) Pantropic canine coronavirus infections are endemic worldwide.

A

false

165
Q

6) Pantropic canine coronavirus causes a mild respiratory disease in suckling dogs.

A

false

166
Q

1) The canine respiratory coronavirus belongs to a different group than enteral coronavirus

A

true

167
Q

2) Canine respiratory coronavirus and human coronaviruses are genetically very distant relatives in all cases

A

false

168
Q

3) Canine respiratory coronavirus and bovine coronaviruses are genetically closely relatives

A

true

169
Q

4) Canine respiratory coronavirus infection results cross-protection against CCOV-I

A

false

170
Q

5) In suckling dogs CCoV-II infection causes respiratory disease

A

false

171
Q

6) Canine coronavirus is part of kennel cough.

A

true

172
Q

1) The FIP is a pathotype of feline coronavirus

A

true

173
Q

2) Almost all cat vaccines contain antibodies against FIP.

A

false

174
Q

3) The wet form of FIP is II. type of hypersensitivity

A

false

175
Q

4) The dry form of FIP is I. type of hypersensitivity

A

false

176
Q

5) The dry form of FIP is IV. type of hypersensitivity

A

true

177
Q

6) FIP is an incurable disease

A

true

178
Q

7) FIP is caused by jackal coronavirus

A

false

179
Q

8) FIP responds well to antibiotic treatment

A

false

180
Q

9) Most animals infected with feline coronavirus develop FIP

A

false

181
Q

10) Cats can be vaccinated against feline coronavirus, but protection against FIP is not effective

A

true

182
Q

11) The dry form of FIP is I. type of hypersensitivity

A

false

183
Q

12) The feline coronavirus causes viraemia only in FIP

A

false

184
Q

13) The feline coronavirus is usually an enteric disease

A

true

185
Q

14) The feline coronavirus is a zoonotic agent

A

false

186
Q

15) Feline enteric coronavirus (FECOV) can only infect Felidae

A

true

187
Q

16) Feline enteric coronaviruses may infect dogs

A

false

188
Q

feline infectious peritonitis viruses form a single serotype

A

false

189
Q

18) Feline enteric coronavirus infection usually causes sudden death of queens

A

false

190
Q

19) In the background of FIP can be immunopathological processes

A

true

191
Q

20) FIP causes infection only in cats younger than 1 year of age.

A

false

192
Q

21) Feline corona virus does not have a long infection/carrier time

A

false

193
Q

22) Feline infectious peritonitis (FIP) develops only in adult cats (over 1 year of age).

A

false

194
Q

23) Decreased serum albumin/globulin ratio may indicate FIP

A

true

195
Q

24) Feline enteric coronavirus usually causes severe, haemorrhagic enteritis in kittens

A

false

196
Q

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

A

true

197
Q

26) All species of Felidae are susceptible to feline coronaviruses

A

true

198
Q

27) Coronaviruses can cause asymptomatic infection in cats

A

true

199
Q

28) Feline coronaviruses can cause mild watery diarrhoea.

A

true

200
Q

29) Feline infectious peritonitis is an acute disease, it appears after a 2-3 days long incubation.

A

false

201
Q

30) Feline coronavirus is a recombinant canine virus

A

true

202
Q

31) Feline enteric coronavirus causes FIP in 5-10% of cases

A

true

203
Q

32) FIP mainly infects with faeces

A

true

204
Q

33) Feline enteric coronavirus (FECoV) can only infect Felidae

A

true

205
Q

34) Effusive FIP is the result of a type 3 hypersensitivity reaction

A

true

206
Q

35) Feline enteric coronavirus infection of cats is very common

A

true

207
Q

36) Vaccine effectively protects from feline infectious peritonitis

A

false

208
Q

37) Feline coronavirus has two serotypes, both having two pathotypes

A

true

209
Q

38) FECoV infection usually causes acute haemorrhagic enteritis

A

false

210
Q

39) The Feline enteric coronavirus usually does not cause severe enteritis

A

true

211
Q

40) FIP forms because of immunotolerance

A

false

212
Q

41) In the presence of high-titer antibody level, infectious peritonitis cannot develop in cats.

A

true, should be false

213
Q

1) Avian coronaviruses provide long lasting yolk-immunity

A

false

214
Q

1) Inactivated vaccine against IBV can be used any ages.

A

false

215
Q

2) A clinical sign of IBV can be nephritis

A

true

216
Q

3) IBV has nephropathogenic strains

A

true

217
Q

4) Infectious bronchitis virus causes tracheitis and pneumonia in chicken below 6 weeks of age

A

true

218
Q

5) The eggs are not infected infectious bronchitis virus

A

true

219
Q

6) IBV, the most important route is the germinative route

A

false

220
Q

7) IBV, have a wide range of serotypes including many variant strains

A

true

221
Q

8) IBV, cause stunting growth when embryonated egg is infected

A

false

222
Q

9) IBV is an arterivirus

A

false

223
Q

10) Mortality of IBV is high every ages

A

false

224
Q

11) Mortality of IBV depends on the coinfections

A

true

225
Q

12) IBV causes swollen oviducts in chicken

A

true

226
Q

13) Mortality of IBV depends on the age

A

true

227
Q

14) IBV can cause soft-shelled egg

A

true

228
Q

15) IBV cannot cause viraemia

A

false

229
Q

16) The Infectious Bursitis Virus IBDV is inactivated within 1-2 days in the environment

A

false

230
Q

17) Infectious bronchitis viruses belong into 3 distinct serotypes

A

false

231
Q

18) Infectious bronchitis virus damages the ovaries only in hens

A

false

232
Q

19) Infectious bronchitis virus can cause renal problems

A

true

233
Q

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

A

true

234
Q

21) Infections bronchitis virus vaccines are used against turkey enteritis

A

false

235
Q

22) Infectious bronchitis virus can cause severe respiratory signs in young chicken.

A

true

236
Q

23) Infectious bronchitis virus can damage the oviduct

A

true

237
Q

24) Infectious bronchitis can spread very slowly in the flock causing chronic disease

A

false

238
Q

25) There are no vaccines for the prevention of infectious bronchitis of chicken

A

false

239
Q

26) Infectious bronchitis virus of chicken is a uniform virus without any types of variants.

A

false

240
Q

27) There is no germinative infection in the case of infectious bronchitis of chicken

A

true

241
Q

28) Infectious bronchitis virus replicates in the epithelial cells of the trachea and bronchi.

A

true

242
Q

29) Infectious bronchitis virus can result in damaged or abnormal shell formation.

A

true

243
Q

30) Infectious bronchitis has a lot of serotypes

A

true

244
Q

31) Infectious bronchitis viruses may have different organ tropism.

A

true

245
Q

32) Germinative route is the most important in the transmission of infectious bronchitis

A

false

246
Q

33) Inactivated vaccines can be used against infectious bronchitis

A

true

247
Q

34) Attenuated vaccines can be used against infectious bronchitis

A

true

248
Q

35) Infectious bronchitis viruses form 2 distinct serotypes

A

false

249
Q

36) Infectious bronchitis viruses have a wide range of serotypes including many variants

A

true

250
Q

37) The clinical signs of Infectious bronchitis and Newcastle disease may be similar

A

true

251
Q

1) Coronavirus can cause diarrhoea in turkeys

A

true

252
Q

2) Turkey corona virus does not cause strong diarrhoea and causes no necrosis

A

false

253
Q

3) Turkey enteritis is characterized by age-dependent mortality rates

A

true

254
Q

vaccination of turkey breeding flocks against Turkey enteritis virus is mandatory

A

false

Epi (74 decks)

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