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Epidemiology > Midterm 1: Herpesvirus > Flashcards

Midterm 1: Herpesvirus Flashcards

1
Q

Herpesviruses are good antigens

A

False

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2
Q

Alphaherpesviruses are host specific slowly multiplying (24hrs) viruses

A

False

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3
Q

Alphaherpesviruses may cause latent infection in neurons or ganglia

A

True

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4
Q

Some herpesviruses have a broad host spectrum (euryxen)

A

True

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5
Q

Gammaherpesviruses may cause latent infection in neurons of ganglia

A

False (lymphoid cells, alpha = neurons)

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6
Q

Herpes viruses are resistant to detergents

A

False

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7
Q

Herpesviruses are sensitive to detergents

A

True

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8
Q

Herpesviruses are generally weak antigens

A

True

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9
Q

Herpesviruses can cause latent persistent infections

A

True

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10
Q

Herpesviruses are typically stenoxen viruses, but there are significant exceptions

A

True

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11
Q

Herpesviruses are strong antigens, therefore single vaccinations provide lifelong protection

A

False

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12
Q

Herpesviruses are enveloped viruses, therefore they are sensitive to detergents

A

True

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13
Q

There are no serological cross-reactions between different herpesvirus species

A

False

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14
Q

Because the genome of herpesviruses is very stable, no attenuated mutant vaccine strains are available

A

False

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15
Q

Infectious bovine vulvovaginitis virus strains cause abortions and foetal deformities

A

False

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16
Q

Herpesvirus infections frequently result in latent virus carry

A

True

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17
Q

Herpesviruses usually cause latent infections and life-long virus carries

A

True

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18
Q

Infectious bovine rhinotracheitis virus can cause abortion

A

True

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19
Q

The use of marker vaccines can help the eradication of infectious bovine rhinotracheitis virus

A

True

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20
Q

The most frequently used eradication strategy for IBRV is selection with the help of marker vaccines

A

True

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21
Q

Marker vaccines can be used in IBRV eradication programs in cattle farms

A

True

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22
Q

Antibodies against infectious bovine rhinotracheitis virus (IBRV) might be detected in the milk

A

True

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23
Q

Conjunctivitis and blepharitis are signs of infectious bovine rhinotracheitis

A

True

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24
Q

The infectious bovine rhinotracheitis virus (IBRV) causes haemorrhagic gastroenteritis

A

False

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25
Q

Infectious bovine rhinotracheitis virus also causes mastitis in cows

A

False

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26
Q

Infectious bovine rhinotracheitis virus is transmitted by arthropods

A

False

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27
Q

Infectious bovine rhinotracheitis virus can cause fatal encephalitis in calves

A

True

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28
Q

Infectious Bovine Rhinotracheitis virus frequently causes encephalitis in old cow and bulls

A

False

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29
Q

Infectious Bovine Rhinotracheitis virus frequently causes encephalitis in old sow and bulls

A

False

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30
Q

Infectious Bovine Rhinotracheitis can be endemic on cattle farms

A

True

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31
Q

Infectious bovine rhinotracheitis virus can cause skin lesions on the genitals

A

True

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32
Q

Bulls can shed the infectious bovine rhinotracheitis with semen

A

True

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33
Q

The infectious bovine rhinotracheitis virus (IBRV) may spread via semen

A

True

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34
Q

Pregnant cows should be immunised with inactivated vaccines against IBRV

A

True

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35
Q

Pregnant cows should be immunised against IBRV only with inactivated vaccines

A

True

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36
Q

Attenuated vaccines are used in pregnant cows against Infectious Bovine Rhinotracheitis virus

A

False

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37
Q

Pregnant cows can be immunised against IBRV only with attenuated vaccines

A

False

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38
Q

Because Bovine herpesvirus l causes latent infections; it is not possible to eradicate it from a cattle population

A

False

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39
Q

Bovine herpesvirus l may cause encephalitis in calves

A

True

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40
Q

IBRV may cause encephalitis in calves

A

True

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41
Q

Only inactivated vaccines are available against Bovine herpesvirus l

A

False

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42
Q

Bovine herpesvirus 1 may be transmitted through semen

A

True

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43
Q

Seropositive cattle cannot be carriers of the Infections Rhinotracheitis virus

A

False

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44
Q

Infectious Bovine Rhinotracheitis virus (IBRV) can be transmitted through vectors

A

False

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45
Q

The IBR virus causes nephritis in calves usually in the age between one and six months

A

False

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46
Q

Infectious Bovine Rhinotracheitis (IBR) causes serous nasal discharge

A

True (starts off as serous, then becomes mucopurulent)

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47
Q

Infectious Bovine Rhinotracheitis in 6-month-old calves usually causes pneumonia

A

True (?)

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48
Q

Infectious Bovine Rhinotracheitis in cattle 6 months of age can cause encephalitis

A

False

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49
Q

Infectious Bovine Rhinotracheitis often causes genital lesions with vesicles

A

True

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50
Q

Infectious Bovine Rhinotracheitis may cause inflammation of conjunctiva

A

True

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51
Q

Infectious Bovine Rhinotracheitis causes purulent discharge

A

True

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52
Q

In Hungary the IgE-negative marker vaccine is to be used in the control of Infectious Bovine Rhinotracheitis

A

True

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53
Q

Infectious Bovine Rhinotracheitis is rapidly spread within the herd

A

False

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54
Q

Infectious Bovine Rhinotracheitis is no longer present in Hungary

A

False

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55
Q

The respiratory form of Infectious Bovine Rhinotracheitis is often followed by genital symptoms

A

False

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56
Q

Infectious Bovine Rhinotracheitis spreads slowly within a herd

A

True

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57
Q

We can see characteristic clinical signs of Infectious Bovine Rhinotracheitis in day-old calves

A

False

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58
Q

We are doing Infectious Bovine Rhinotracheitis virus eradication programs in Hungary

A

True

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59
Q

Infectious Bovine Rhinotracheitis virus mainly causes encephalitis in cattle older than 6 months

A

False

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60
Q

Infectious Bovine Rhinotracheitis mainly causes pneumonia in 1-6 months old calves

A

True

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61
Q

Infectious Bovine Rhinotracheitis is rare, BHV-1 only affects cattle

A

False

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62
Q

In the transmission IBRV, the most important route is the germinative route

A

False

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63
Q

Genital form of IBR is often followed by abortion

A

False

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64
Q

IBR can occur in several clinical forms

A

True

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65
Q

IBR is a frequent infection, cattle and its closest relatives are affected

A

True

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66
Q

Bovine Herpes virus 2 frequently causes abortion

A

False

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67
Q

Bovine herpes mammillitis virus can cause mastitis in cows

A

True (doesn’t cause it but can predispose it)

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68
Q

Bovine herpes mammillitis virus may cause lesions on the muzzle of suckling calves

A

True

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69
Q

The bovine herpes mammillitis virus causes lesions on the skin of the milkers, therefore it is a zoonotic agent

A

False

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70
Q

Bovine herpesvirus 2 may cause generalised skin lesions

A

True

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71
Q

Bovine herpesvirus 2 is the most frequent primary cause of mastitis in cattle

A

False

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72
Q

Bovine Herpes Mammillitis virus causes milkers nodules in humans

A

False

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73
Q

Bovine Herpes Mammillitis virus may cause lesions on the lips of milking calves

A

True

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74
Q

Regarding Bovine Herpes Mammillitis, mainly heifers show clinical signs

A

True

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75
Q

Swine inclusion body rhinitis virus is causing mainly subclinical infection

A

True

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76
Q

Bloody nasal discharge can be a sign of swine inclusion body rhinitis

A

True

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77
Q

Clinical manifestation of swine inclusion body rhinitis is usually seen in piglets less than 3 weeks old

A

True

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78
Q

Inclusion body rhinitis is predisposing to fatal respiratory disease in pigs

A

False

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79
Q

Suid herpesvirus 2 may cause upper respiratory tract disease in piglets

A

True

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80
Q

Swine Inclusion Body Rhinitis is usually seen in piglets

A

True

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81
Q

The Swine Inclusion Body Rhinitis virus may cause reproductive problems in sows

A

True

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82
Q

Malignant catarrhal fever is mostly fatal in sheep

A

False

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83
Q

Malignant catarrhal fever is an alphaherpesvirus causing latent infection in ganglia

A

False

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84
Q

Malignant catarrhal fever develops only in suckling calves up to two weeks of age

A

False

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85
Q

Malignant catarrhal fever can be seen only in calves younger than one month

A

False

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86
Q

Malignant catarrhal fever causes only mild respiratory disease in sheep

A

False

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87
Q

Sheep should be immunised against malignant catarrhal fever virus

A

False

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88
Q

Malignant catarrhal fever may develop in swine too

A

True

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89
Q

Malignant catarrhal fever is frequently seen in cats

A

False

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90
Q

Cattle should be vaccinated against malignant catarrhal fever

A

False

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91
Q

Goats are the reservoir hosts of the malignant catarrhal fever virus

A

False

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92
Q

The incubation period of malignant catarrhal fever is less than one week

A

False

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93
Q

Malignant catarrhal fever is quickly spreading from cattle to cattle

A

False

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94
Q

Cattle should be vaccinated against malignant catarrhal fever every six months

A

False

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95
Q

The malignant catarrhal fever is caused by Bovine Herpes virus-2

A

False

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96
Q

Malignant Catarrhal Fever is usually lethal in cattle

A

True

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97
Q

Rodents are the reservoir hosts of the Malignant Catarrhal Fever virus

A

False

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98
Q

Swine are the reservoir host of the Malignant Catarrhal Fever virus

A

False

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99
Q

The Malignant Catarrhal Fever is caused by Bovine herpesvirus-2

A

False

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100
Q

We vaccinate calves 2 times against Malignant Catarrhal Fever

A

False

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101
Q

Swine are affected by Malignant Catarrhal Fever

A

True

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102
Q

Malignant Catarrhal Fever does not occur in Europe

A

False

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103
Q

Malignant Catarrhal Fever can cause diarrhoea

A

True

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104
Q

Malignant Catarrhal Fever spreads slowly within a cattle herd

A

False

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105
Q

Malignant Catarrhal Fever occurs if we keep cattle and sheep together

A

True

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106
Q

Malignant Catarrhal Fever does not occur in Hungary

A

False

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107
Q

Equine rhinopneumonitis virus is transmitted by arthropods

A

False

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108
Q

For immunisation against equine rhinopneumonitis virus mostly marker vaccines are used

A

False

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109
Q

Equine rhinopneumonitis virus can cause abortion several weeks after acute infection

A

True

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110
Q

Equine rhinopneumonitis virus causes cytoplasmic inclusion bodies in the foetal hepatocytes

A

False

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111
Q

Equid herpesvirus 4 more frequently causes encephalitis than Equid herpesvirus 1

A

False

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112
Q

Horses should be vaccinated against equine rhinopneumonitis virus at least every 6 months

A

True

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113
Q

Equine rhinopneumonitis virus causes necrotic foci in the liver of the foetus

A

True

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114
Q

Fever and serous nasal discharge are early signs of acute equine rhinopneumonitis

A

True

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115
Q

Equine rhinopneumonitis virus can cause purulent metritis

A

False

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116
Q

Only equine herpesvirus 4 can cause abortion

A

False

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117
Q

Pregnant mares abort usually in the acute phase of equine rhinopneumonitis

A

False

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118
Q

After EHV1 infection pregnant mares abort in the acute febrile stage

A

False

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119
Q

Immunisation against equine rhinopneumonitis virus provides life long protection

A

False

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120
Q

Equine rhinopneumonitis virus is present only in North America

A

False

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121
Q

The equid herpesvirus 1 may cause abortion storms in studs

A

True

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122
Q

Pregnant mares abort usually several weeks after equid herpesvirus 1 infection

A

True

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123
Q

Vaccinated horses cannot get infected with Equid herpesvirus 1

A

False

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124
Q

Equid herpesvirus 1 associated abortions are always sporadic

A

False

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125
Q

Equid herpesvirus 1 may cause subclinical infection in horses

A

True

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126
Q

Only pregnant mares should be immunised against Equid herpesvirus-1 infection

A

False

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127
Q

A single vaccination against Equid herpesvirus-1 provides life-long protection

A

False

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128
Q

Equine rhinopneumonitis virus can cause only respiratory problems

A

False

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129
Q

Both equid herpesvirus 1 and 4 can cause abortion

A

True

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130
Q

For immunisation against Equine rhinopneumonitis virus mostly marker vaccines are used

A

False

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131
Q

A single vaccination of a horse against EHV-1 induces protection for several years

A

False

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132
Q

Equine herpesvirus-4 primarily causes abortion in horses

A

False

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133
Q

Equine herpesvirus-4 causes mainly respiratory symptoms in horses

A

True

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134
Q

Equine herpesvirus-1 contains cross-reactive proteins against disease caused by EHV-4

A

True

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135
Q

Vaccination containing Equine herpesvirus-1 also provides protection against EHV-4

A

True

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136
Q

Equine herpesvirus-1 primarily causes respiratory symptoms in horses

A

True

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137
Q

Equine herpesvirus-1 primarily causes abortion

A

False

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138
Q

One vaccination is enough to prevent Equine herpesvirus-1

A

False

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139
Q

Mares infected with Equine herpesvirus-1 have a febrile state, then abort

A

True

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140
Q

Horses should be vaccinated against Equine herpesvirus-1 every six months

A

False

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141
Q

Equine herpesvirus 2 may cause keratoconjunctivitis

A

True

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142
Q

Equine herpesvirus 2 can cause respiratory disease only in young foals

A

True

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143
Q

Equid herpesvirus-2 may cause respiratory disease in foals

A

True

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144
Q

Equid herpesvirus 5 may play a role in the equine multinodular pulmonary fibrosis

A

True

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145
Q

Equid herpesvirus 2 may cause keratoconjunctivitis in foals

A

True

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146
Q

Equid herpesvirus 5 causes encephalitis in foals

A

False

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147
Q

Equine herpesvirus-2 and 5 causes pustular vulvovaginitis

A

False

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148
Q

Equid herpesvirus-2 may cause Coital Exanthemas in horses

A

False

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149
Q

Equid herpesvirus-2 and 5 cause diarrhoea and hepatitis in foals

A

False

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150
Q

In horses infected with Equine herpesvirus-2, the symptoms are often unnoticed

A

True

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151
Q

Equine herpesvirus-2 in horses does not cause symptoms in adult animals

A

True

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152
Q

It is enough to vaccinate mares 2 times against Equine herpesvirus-2

A

False

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153
Q

Equid herpesvirus 3 can cause lesions on the genital mucosa without abortion

A

True

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154
Q

Equid herpesvirus 3 may cause coital exanthema in horses

A

True

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155
Q

Abortion is frequent complication of coital exanthema in mares

A

False

156
Q

Herpesvirus 3 can be transmitted through mating

A

True

157
Q

Coital exanthema virus frequently causes abortion

A

False

158
Q

Coital Exanthema virus does not cause abortion

A

True

159
Q

Equine Coital Exanthema can cause abortion storms in studs

A

False

160
Q

Equine herpesvirus-3 cause abortion storms

A

False

161
Q

Canine herpesvirus infection can cause abortion

A

True

162
Q

Herpesvirus infection of adult dogs may result in reproductive disorders

A

True

163
Q

Canine herpesvirus infection frequently appears with flu like symptoms

A

True

164
Q

Feline herpesvirus infects dogs as well

A

False

165
Q

Liver lesions are frequently seen in puppies with Canid herpesvirus 1 infection

A

True

166
Q

Canine herpesvirus infection can cause blue eye disease

A

False

167
Q

Herpesvirus is frequently causing kennel cough

A

True

168
Q

Hypothermia and weak immune response facilitate the severity of canid herpes virus infection of dogs

A

True

169
Q

Latent canine herpesvirus infection can be activated in pregnant bitches

A

True

170
Q

Canine herpesvirus can cause transplacental infection

A

True

171
Q

Pregnant bitches can be immunised against canine herpesvirus with inactivated vaccine

A

True

172
Q

Herpes infection of pups 2-3 weeks old is fatal

A

True

173
Q

Canine Herpes virus may remain in latency for years in infected animals

A

True

174
Q

Canine herpesvirus 1 may contribute to the kennel cough syndrome

A

True

175
Q

Canid herpesvirus-1 may cause generalised infection and severe disease in young puppies

A

True

176
Q

Inactivated vaccines are available for immunisation against Canid herpesvirus-1

A

True

177
Q

Upper respiratory infection of Canid herpesvirus-1 may contribute to the kennel cough syndrome

A

True

178
Q

In utero infections with Canid herpesvirus may result in abortion

A

True

179
Q

Decreased body temperature has a negative effect on Canine herpesvirus infected animals

A

True

180
Q

Herpesvirus infection of dogs is most severe in 3-6 months old puppies

A

False

181
Q

Large dog kennels are usually seropositive for canine herpesvirus

A

True

182
Q

Canine herpesvirus infection can be deadly below 2-3 weeks of age

A

True

183
Q

Feline rhinotracheitis predisposes to pneumonia caused by Bordetella bronchiseptica

A

True

184
Q

Feline rhinotracheitis can cause foetal developmental anomalies in pregnant cats

A

True

185
Q

Felid herpesvirus does not cause viraemia and abortion

A

False

186
Q

Abortion is uncommon in feline rhinotracheitis of pregnant animals

A

False

187
Q

Abortion is rare in rhinotracheitis infected pregnant cats

A

False

188
Q

Sneezing is a typical sign of feline infectious rhinotracheitis

A

True

189
Q

Feline herpesvirus does not cause respiratory signs, only viraemia and abortion

A

False

190
Q

Conjunctivitis is a frequent sign of feline rhinotracheitis

A

True

191
Q

Conjunctivitis and muco-purulent nasal discharge are frequent signs of feline rhinotracheitis

A

True

192
Q

Clinical signs of feline infectious rhinotracheitis are similar to those of calicivirus

A

True

193
Q

Feline infectious rhinotracheitis often results high mortality in susceptible young kittens

A

True

194
Q

Feline infectious rhinotracheitis often results in abortion of pregnant queens

A

True

195
Q

Felid herpesvirus 1 spreads slowly in cat populations

A

False

196
Q

Feline infectious rhinotracheitis is characterised by inflammation of the upper respiratory tract

A

True

197
Q

Crowded area, poor general condition and stress contribute significantly to the development of feline infectious rhinotracheitis

A

True

198
Q

Prolonged contact is usually needed for successful transmission of feline infectious rhinotracheitis

A

True

199
Q

Feline infectious rhinotracheitis can be treated with specific hyperimmune sera

A

True

200
Q

Ulcerations of the oral mucosa are frequent signs of Feline Rhinotracheitis

A

False

201
Q

Feline Infectious Rhinotracheitis occurs in summer because Felid herpesvirus-1 is transmitted by mosquitoes

A

False

202
Q

Feline herpesvirus-1 is mainly transmitted by mosquitoes

A

False

203
Q

Felid herpesvirus-1 is moderately contagious: spreads slowly in cat populations

A

False

204
Q

Feline Infectious Rhinotracheitis virus is transmitted mainly through the air

A

False

205
Q

The Feline Infectious Rhinotracheitis virus is very contagious to cats

A

True

206
Q

Mucous is a frequent sign of Feline Infectious Rhinotracheitis

A

True

207
Q

The infectious laryngotracheitis is seen only in young chickens

A

False

208
Q

Diarrhoea is frequent in infectious laryngotracheitis of chickens

A

False

209
Q

Infectious laryngotracheitis virus strains may differ in virulence

A

True

210
Q

Encephalitis is a frequent complication in Infectious Laryngotracheitis of chickens

A

False

211
Q

Ducks are the most susceptible to infectious laryngotracheitis virus

A

False

212
Q

The infectious laryngotracheitis causes pseudomembrane formation in the oesophagus

A

False (trachea)

213
Q

Chickens above 6 weeks of age are not susceptible to infectious laryngotracheitis

A

False

214
Q

The infectious laryngotracheitis can cause viraemia and pneumonia in young

A

False

215
Q

Conjunctivitis is a frequent sign of infectious laryngotracheitis

A

True

216
Q

Infectious laryngotracheitis virus is typically transmitted by the germinative route

A

False

217
Q

Infectious laryngotracheitis can be deadly in chickens

A

True

218
Q

Infectious laryngotracheitis is most frequently seen in day-old chickens

A

False

219
Q

Infectious laryngotracheitis virus is shed mainly with faeces

A

False

220
Q

Infectious Laryngotracheitis virus replicates in the liver of cats

A

False

221
Q

Infectious Laryngotracheitis virus replicates in the upper respiratory tract

A

True

222
Q

Germinative route is the most important factor in the transmission of the Infectious Laryngotracheitis virus.

A

False

223
Q

Tracheal lesions of Infectious Laryngotracheitis may be similar to those of fowl pox

A

True

224
Q

The Infectious Laryngotracheitis virus does not cause viraemia

A

True

225
Q

Infectious Laryngotracheitis is most frequently seen in day-old turkey

A

False

226
Q

Infectious Laryngotracheitis virus is present worldwide

A

True

227
Q

Infectious Laryngotracheitis usually occurs clinically under 6 weeks of age

A

False

228
Q

Infectious Laryngotracheitis causes changes in the larynx and upper airways

A

True

229
Q

Infectious Laryngotracheitis virus invades the kidneys after viraemia

A

False

230
Q

Infectious Laryngotracheitis of poultry spreads germinatively

A

False

231
Q

Infectious Laryngotracheitis also occurs in Hungary

A

True

232
Q

Infectious Laryngotracheitis causes eggshell deformation

A

False

233
Q

Infectious Laryngotracheitis frequently damages the oviduct of hen

A

False

234
Q

Infectious Laryngotracheitis can be deadly in chickens

A

True

235
Q

Mortality of infectious laryngotracheitis can go up to 50%

A

True

236
Q

The Aujeszy’s disease virus is stenoxen

A

False

237
Q

Wild boars are not susceptible to Aujeszy’s disease virus

A

False

238
Q

Abortion of sows can be a sign of Aujeszys disease

A

True

239
Q

Pregnant sows may abort in Aujeszky’s disease

A

True

240
Q

In swine the most serious CS of Aujeszky’s disease are usually seen in piglets

A

True

241
Q

Dogs should be vaccinated against Aujeszky’s disease

A

False

242
Q

Carnivores are the reservoir hosts of the Aujeszky’s disease virus

A

False

243
Q

The Aujeszky’s disease in cats is usually a mild respiratory disease with quick recovery

A

False

244
Q

The signs of Aujeszky’s disease in dogs are similar to rabies

A

True

245
Q

The natural reservoir hosts of the Aujeszky’s disease virus are rodents

A

False

246
Q

The Aujeszy’s disease causes fatal pneumonia in Ruminants and Carnivores

A

False

247
Q

The Aujeszky disease is zoonosis

A

False

248
Q

The symptoms of Aujeszky’s disease in ruminants is similar to rabies

A

True

249
Q

The Aujeszy disease virus may infect several mammalian hosts

A

True

250
Q

Aujeszky’s diseases can be latently carried by pigs in the nervous system

A

True

251
Q

Central nervous signs of the Aujeszky’s disease are rarely seen in adult swine

A

True

252
Q

Convalescent swine are life-long carriers and potential shedders of Aujeszky’s disease virus

A

True

253
Q

Swine are immunised against the Aujeszky’s disease virus usually with gE negative marker vaccines

A

True

254
Q

Rats are the reservoir hosts of Aujeszky’s disease

A

False

255
Q

The Suid herpesvirus 1 frequently causes encephalitis in humans

A

False

256
Q

Liquid manure may play a role in the transmission of Suid herpesvirus 1 from swine to cattle

A

True

257
Q

Discriminative ELISA tests may differentiate between vaccinated swine wild type Suid- herpesvirus infected ones

A

True

258
Q

In adult swine the most frequent manifestation of Aujeszky’s disease is encephalitis

A

False

259
Q

Aujeszky’s disease virus infection in adult pigs is frequently subclinical

A

True

260
Q

Pigs infected with wild type Aujeszky’s disease virus can be differentiated from vaccinated ones by serological tests (i.e ELISA)

A

True

261
Q

Cattle should be vaccinated against Malignant Catarrhal Fever

A

False

262
Q

Aujeszky ́s disease can occur in pigs and cats

A

True

263
Q

Aujeszky ́s disease in pigs causes viraemia

A

True

264
Q

Aujeszky’s disease in cats spreads along the nerves

A

True

265
Q

Aujeszky’s disease can cause respiratory signs in adult pigs

A

True

266
Q

Aujeszky’s disease causes fever in day-old piglets

A

True

267
Q

Aujeszky’s disease causes pneumonia in susceptible piglets

A

False

268
Q

Aujeszky’s disease doesn’t cause clinical signs in susceptible piglets

A

False

269
Q

Aujeszky’s disease causes pruritus in susceptible piglets

A

False

270
Q

Aujeszky’s disease causes 20-30% mortality in susceptible piglets

A

False

271
Q

Older pigs are more frequently affected by Aujeszky’s

A

False

272
Q

In case of viraemia the GaHV2 spreads to fowl’s organs in macrophages

A

True

273
Q

Transient paralysis form of Marek’s disease can be present in 6-week-old chicken

A

True

274
Q

Infection of Marek’s disease can occur in hatchery

A

True

275
Q

The vaccines of Marek’s disease are not efficient

A

False

276
Q

The turkey herpesvirus causes cross immunity against Marek’s disease

A

True

277
Q

Turkey Herpes virus can be used for vaccination against Marek Disease

A

True

278
Q

Lymphoproliferative form of Marek’s disease can be present in 6-week-old chicken

A

True

279
Q

Lymphoproliferative form of Marek’s disease can be present in hens (older age)

A

False

280
Q

Clinical signs of Marek’s disease are rare, because of vaccination

A

True

281
Q

Lymphoproliferative form of Marek’s disease is a chronic disease

A

False

282
Q

The duck herpes virus causes cross immunity against Marek disease

A

False

283
Q

The free virions spread to organs independent of cells in the case of Marek disease

A

False

284
Q

Transient paralysis form of Marek’s disease can be present in hens

A

False

285
Q

Lymphoproliferative form of Marek’s disease is an acute disease

A

True

286
Q

Neurological form of Marek’s disease can be present in 4 week old chicken

A

False

287
Q

There is in ovo vaccine against Marek’s disease

A

True

288
Q

Intake of GaHV2 happens most frequently per os

A

False

289
Q

Germinative infection does not occur in Marek’s disease

A

True

290
Q

Germinative infection does occur in Marek’s disease

A

False

291
Q

In case of viraemia the GaHV2 spreads to fowl’s organs in red blood cells

A

False

292
Q

The acute form of Mareks is primarily a tumour formation

A

True

293
Q

Marek disease is usually seen in chickens below 2 weeks of age

A

False

294
Q

Marek disease virus is shed with faeces in high titres

A

False

295
Q

Signs of Marek disease may be very similar to reticuloendotheliosis signs

A

True

296
Q

The Marek disease virus survives for long in the environment

A

True

297
Q

Marek disease is caused by turkey herpesvirus

A

False

298
Q

Transient Marek paralysis may lead to visceral form

A

True

299
Q

Transient paralysis by Marek’s disease usually ends in full recovery

A

False

300
Q

The chronic form of Marek disease is characterised by neurological disorders

A

True

301
Q

The chronic form of Marek disease is due to circuses of higher virulence

A

False

302
Q

Marek disease is the result of airborne infection

A

True

303
Q

Marek disease usually starts as an airborne infection

A

True

304
Q

Free Marek virus particles are shed from the feather follicles

A

True

305
Q

The Marek’s disease virus may survive in the environment for several months

A

True

306
Q

Marek’s disease is most frequently seen in geese and ducks

A

False

307
Q

Free virions of the Marek’s disease virus are formed in the feather follicle epithelial cells

A

True

308
Q

Humoral immunity plays the central role in the host’s defence against the Marek’s disease virus

A

False

309
Q

The neurological form of Marek’s disease is seen only in day-old chicks

A

False

310
Q

Chicken shed the Marek’s disease virus via feather follicular epithelial cells

A

True

311
Q

The pathological lesions of acute Marek’s disease and reticuloendotheliosis can be similar

A

True

312
Q

Conjunctivitis is a frequent sign of acute Marek’s disease

A

False

313
Q

The Marek’s disease virus is transmitted by inhalation

A

True

314
Q

Marek’s disease virus can’t be prevented by vaccination, because it ́s immunosuppressive

A

False

315
Q

The pathology lesions of acute Marek ́s disease and avian leukosis can be similar

A

True

316
Q

The Marek’s disease virus causes immunosuppression

A

True

317
Q

The acute form of Marek’s disease is characterised by lymphoid cell proliferation

A

True

318
Q

The neurological form of Marek’s disease has a mass appearance

A

False

319
Q

The highly virulent strains of Marek’́s disease may cause tumours in turkey

A

True

320
Q

The incubation time of acute Marek’s disease is 1-2 days

A

False

321
Q

The neurological form of Marek’s disease leads to significant liver degeneration

A

False

322
Q

Both serotypes of the Marek’s virus cause disease in geese

A

False

323
Q

North America is free of Marek’́s disease

A

False

324
Q

Marek’s disease only occurs in domestic fowl

A

True

325
Q

Marek’s disease spreads primarily via the aerogenous route

A

True

326
Q

Marek’s disease virus is shed mainly via the faeces

A

False

327
Q

Marek ́s disease in the blood multiplies in the endothelial cells

A

False

328
Q

Marek ́s disease is a beta herpes virus

A

False

329
Q

Marek’s disease primarily targets day-old chickens

A

False

330
Q

The neoplastic form of Marek disease is caused by high virulence strains

A

True

331
Q

Vaccination is used for the prevention of Marek ́s disease

A

True

332
Q

The neoplastic form of Marek’s is caused by low virulence strains

A

False

333
Q

We can differentiate Marek’s disease from reticuloendotheliosis only by lab diagnostics methods

A

True

334
Q

Prevention against Marek’s: no measures needed as the disease remains mostly symptomless

A

False

335
Q

General preventative measures and vaccination of day-old chickens must be used for the prevention of Marek’s disease

A

True

336
Q

Live attenuated strains are used for vaccination against Marek’s disease

A

True

337
Q

No vaccination is needed against Marek’s disease

A

False

338
Q

The highly virulent strains of Marek’s disease may cause tumours in turkeys

A

True

339
Q

Marek’s disease viruses are uniform in their virulence

A

False

340
Q

Highly virulent Marek’s disease viruses may break through vaccine induced protection

A

True

341
Q

Conjunctivitis is a frequent sign of duck viral enteritis

A

True

342
Q

Only sporadic clinical cases of duck viral enteritis are seen in an affected flock

A

False

343
Q

Mallards may transmit the duck enteritis virus to domestic ducks kept on lakes

A

True

344
Q

Liver dystrophy is a frequent lesion of duck viral enteritis (duck plague)

A

True

345
Q

Wild ducks may be persistently infected with duck plague (duck enteritis) virus

A

True

346
Q

Duck plague virus may be shed life long by animals recovered from the disease

A

True

347
Q

Duck plague (viral enteritis) can’t cause high mortality without secondary bacterial infection

A

False

348
Q

Duck plaque and duck viral enteritis are two names of the same disease

A

True

349
Q

Duck viral enteritis is seldom fatal

A

False

350
Q

Treatment is the most effective control method for duck viral enteritis

A

False

351
Q

Duck plague is more severe in wild birds than in domestic ducks

A

False

352
Q

Duck plague virus damages blood vessel endothelium

A

True

353
Q

Duck plague only affects young ducklings

A

False

354
Q

Duck plague is only seen in day old ducklings

A

False

355
Q

Duck viral enteritis is usually mild, osmotic diarrhoea.

A

False

356
Q

Duck plague infects exclusively domestic and wild ducks

A

False

357
Q

Antibiotic treatment is the most effective control method for Duck Viral Enteritis.

A

False

358
Q

Beak deformity is a typical sign of Duck Plague

A

False

359
Q

Muscovy ducks are resistant to the Duck Viral Enteritis

A

False

360
Q

Duck Plague/Duck viral Enteritis cause high mortality in all ages

A

False

361
Q

Duck Plague/Duck viral Enteritis clinical signs in young ducks are only seen in birds up to 4 weeks of age

A

False

362
Q

Vaccines containing a live attenuated strain can be used for prevention against Duck Plague

A

True

363
Q

Duck Plague/Duck viral Enteritis vaccination is not needed as clinical signs are mild

A

False

364
Q

Duck Plague virus can “settle” in wild ducks

A

True

365
Q

Duck Plague is an outbreak of Avian influenza in ducks, with a host-adapted version of the virus

A

False

366
Q

Duck Plague only causes hepatitis in young ducks

A

False

367
Q

Duck Plague only causes disease in ducks and geese

A

False

368
Q

Duck Plague virus causes high mortality in both old and young birds

A

False

369
Q

Duck Plague also affects geese

A

True

370
Q

Duck Plague is a disease of young ducks only

A

False

371
Q

Duck Viral Enteritis can affect all age groups

A

True

372
Q

Depression, respiratory signs and bloody diarrhoea are main signs of Duck Plague

A

True

373
Q

In most cases the Duck Plague disease remains symptomless

A

False

374
Q

Duck Plague is more severe in wild birds than domestic ducks

A

False

375
Q

Pigeon herpesvirus mainly causes encephalitis in adult pigeons

A

False

376
Q

Pigeon herpesvirus infections usually result in a haemorrhagic deadly disease

A

False

377
Q

Pigeon herpesvirus is characterised by focal necrosis in the liver in pigeons

A

True

378
Q

Pigeon herpesvirus kills mostly day old pigeons

A

False

379
Q

Pigeon herpesvirus infection causes feather development problems

A

False

380
Q

Pigeon herpesvirus infections mainly affect young pigeons

A

True

381
Q

Pigeon herpesvirus mainly causes encephalitis in adult pigeons

A

False

382
Q

Pigeon herpesvirus infection is frequently combined with adenovirus and circovirus infection

A

True

383
Q

Pigeon herpesvirus may cause respiratory disease in young pigeons

A

True

384
Q

Pigeon herpesvirus causes conjunctivitis, rhinitis, pharyngitis and diarrhoea in the acute stage

A

True

385
Q

Pigeon herpesvirus infection is related to Marek’s disease

A

True

386
Q

Pigeon herpesvirus has the highest mortality in day-old pigeons

A

False

387
Q

Diarrhoea and nasal discharge are common in Pigeon herpesvirus infections

A

True

Epidemiology (8 decks)

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