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Quiz von Kathryn Borg, aktualisiert more than 1 year ago
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Erstellt von Kathryn Borg
vor mehr als 8 Jahre
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Frage 1
Frage
Correctly describe the family of Poxviridae
Antworten
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Large complex structured viruses with a single molecule of ds DNA
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Large complex structured viruses with a two molecules of ds RNA
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Large complex structured viruses with a single molecule of ss DNA
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Small complex structured viruses with a single molecule of ss DNA
Frage 2
Frage
What are the two sub-families within Poxviridae?
Antworten
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Chordopoxvirinae
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Entomopoxvirinae
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Alphaherpesvirinae
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Papillomavirus
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Orbivirus
Frage 3
Antworten
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Pock
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Pustule
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Ulceration
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Macule
Frage 4
Frage
What is the correct pathogenesis of a pock lesion?
Antworten
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Raised, reddened macule-->papule--> fluid filled vesicle-->Ruptures to form a crater (pock)-->Scarring
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papule--> Raised, reddened macule--> fluid filled vesicle-->Ruptures to form a crater (pock)-->Scarring
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fluid filled vesicle-->papule--> Raised, reddened macule-->Ruptures to form a crater (pock)-->Scarring
Frage 5
Antworten
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Duration of immunity < life span of recovered animal
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Reinfection possible
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Surviving animals are NOT long term carriers
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Infectious virus survives for years in infected material (scabs)
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Pox viruses are very resistant in the environment
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Surviving animals ARE long term carriers
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Pox viruses are labile in the environment
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Immunity is for life
Frage 6
Frage
Poxvirus transmission between animals may occur by?
Antworten
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Mechanical transmission
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Respiratory route by droplets
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Via abraded skin
Frage 7
Frage
Label this diagram correctly. Matching the correct genus with the virus groups (a-f)
Antworten
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Orthopoxvirus
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Parapoxvirus
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Capripoxvirus
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Avipoxvirus
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Suipoxvirus
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Leporipoxvirus
Frage 8
Antworten
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Rodent reservoir
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Endemic in Europe and Russia and exotic to Australia
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Results in pock lesions on teats
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Can affect humans causing maculopapular lesions on hands and face
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Can affect domestic and large cats
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Endemic to Australia
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Mosquito reservoir
Frage 9
Frage
Sheeppox, Lumpy skin disease and Goat pox are closely related viruses that are indistinguishable by serological assays
Antworten
- True
- False
Frage 10
Frage
How might an animal become infected by a Capripoxvirus (sheeppox, lumpy skin disease and goat pox)?
Antworten
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Skin abrasions
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Inhalation of aerosols
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Vector transmission
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Gastrointestinal tract infection
Frage 11
Frage
Where are the Capripoxviruses (sheeppox, lumpy skin disease and goat pox) endemic to?
Antworten
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Endemic in SE Europe, Middle East, Africa and Asia
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Endemic in North America, Northern Europe and Australia
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Endemic in North America and Australia
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Endemic in North America, the UK, Africa and Asia
Frage 12
Frage
What is the pathogenesis of the Capripoxviruses (sheeppox, lumpy skin disease and goat pox)?
Antworten
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Replicates locally in skin
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Replicates in lungs following inhalation
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Can spread to regional lymph nodes
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Replicates in the gut when swallowed
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Replicates in lymphocytes
Frage 13
Frage
What is the incubation period of the Capripoxviruses (sheeppox, lumpy skin disease and goat pox)?
Antworten
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~ 1 week
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~ 3 weeks
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~ 2 weeks
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~ 1 day
Frage 14
Frage
How might fowl pox be transmitted between animals?
Antworten
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Mechanical transmission via mosquitos
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Aerosol transmission
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GIT transmission
Frage 15
Frage
Fowl pox is found within what genus of poxviridae?
Antworten
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Avipoxvirus
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Capripoxvirus
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Orthopoxvirus
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Parapoxvirus
Frage 16
Frage
What is the Parapoxviruses Orf also called?
Antworten
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Scabby Mouth
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Contagious pustular dermatitis
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Contagious ecthyma
Frage 17
Frage
What is this disease most likely to be if it is from the poxviridae family?
Antworten
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Orf
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Bovine Papilloma virus
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Foot and mouth disease
Frage 18
Frage
What is true of the pathogenesis and epidemiology of Orf?
Antworten
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Papular lesions progress to vesicles, pustules and then scabs
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Lesions heal within 4 weeks (if no secondary bacterial infection)
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Replicates in epidermal keratinocytes
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Controlled by virulent vaccination
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Lesions usually on lips and muzzle (feet, genitalia and teats)
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Maintained in flocks by chronic carriers
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Transmission via abrasions
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Primarily a disease of young sheep
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There are NO carrier animals
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There is no vaccination available
Frage 19
Frage
What is Myxomatosis?
Antworten
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A poxvirus disease of rabbits
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A papillomavirus disease of dogs
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A poxvirus disease of dogs
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A poxvirus disease of cats
Frage 20
Frage
Correctly describe the family of Asfarviridae?
Antworten
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They are complex enveloped double stranded DNA virus
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They are complex enveloped single stranded DNA virus
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They are complex non-enveloped double stranded DNA virus
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They are complex enveloped double stranded RNA virus
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They are complex non-double stranded RNA virus
Frage 21
Frage
Asfarviridae is Stable in the environment over a wide range of temperatures (4‐20oC) and a wide range of pH. It may persist for months in meat of infected pigs.
Antworten
- True
- False
Frage 22
Frage
Which of the below viruses belong to the family Asfarviridae?
Antworten
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African Swine Fever Virus
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African Horse Sickness
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Foot and Mouth Disease (FMD)
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Contagious pustular dermatitis
Frage 23
Frage
What animals can Asfarviridae infect?
Antworten
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Soft ticks (Ornithodorus moubata and O erraticus)
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Suidae (eg. pigs, warthogs)
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Felidae (Domestic cats, lions, tigers)
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Bovidae (cattle, ox)
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Canidae (dogs, wolves)
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Blow flies (Lucillia cuprina, Calliphora stygia)
Frage 24
Frage
Is a vaccine available for African Swine Fever Virus?
Antworten
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Yes
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No
Frage 25
Frage
Where does the virus grow within the body?
Antworten
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In the reticuloendothelial system
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In the respiratory sytem
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In the nervous system
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In the gastrointestinal system
Frage 26
Frage
Are there carriers of African swine fever virus?
Antworten
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Yes
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No
Frage 27
Frage
Why might an animal with African Swine Fever Virus die?
Antworten
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Extensive haemorrhages in all organs due to platelet damage and complement activation
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Damage to the CNS causing the lungs to collapse
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Oedamatous fluid in the lungs
Frage 28
Frage
Describe the Herpesviruses?
Antworten
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Enveloped double stranded DNA viruses
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Non-Enveloped double stranded DNA viruses
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Enveloped single stranded DNA viruses
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Non-enveloped single stranded DNA viruses
Frage 29
Frage
Why are the herpesviruses labile in environment and easily inactivated by heat, detergents, pH and drying?
Antworten
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They are enveloped viruses
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They are non-enveloped viruses
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They are capsulated viruses
Frage 30
Frage
How are Herpesviruses transmitted?
Antworten
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Close or mucosal contact for transmission (droplet)
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GIT transmission
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Vector transmission
Frage 31
Frage
What is the key feature of Herpesviruses?
Antworten
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They cause a lifelong latent infection
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They cause 100% mortality in the infected
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Infection results in lifelong immunity
Frage 32
Frage
What are the sub families of Herpesviridae?
Antworten
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Alphaherpesvirinae
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Gammaherpesvirinae
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Betaherpesvirinae
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Deltaherpesvirinae
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Alloherpesvirinae
Frage 33
Frage
Match the correct virus sub families to their features
Antworten
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Gammaherpesvirinae
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Betaherpesvirinae
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Alphaherpesvirinae
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Deltaherpesvirinae
Frage 34
Frage
Bovine herpesvirus 1 (Infectious bovine rhinotracheitis virus) can manifest as which of the below clinical diseases?
Antworten
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Rhinotracheitis
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Generalised disease of newborn calves
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Enteritis
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Abortion
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Conjunctivitis
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Balanoposthitis
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Vulvovaginitis
Frage 35
Frage
How is Bovine Herpesvirus 1 transmitted?
Antworten
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Respiratory route and cell associated viraemia to distant sites
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GIT route
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Fomites
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Vector transmission
Frage 36
Frage
Bovine herpesvirus 2 -- Bovine mammillitis virus (Pseudo‐lumpy skin disease virus) can cause which of the below forms of clinical disease
Antworten
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Mammillitis. Lesions localised to the teats.
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Generalised skin lesions. Nodules & necrosis of the superficial epidermis
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Abortion
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Rhinotracheitis
Frage 37
Frage
Bovine herpes virus 5 causes?
Antworten
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Fatal meningoencephalitis in calves thought to be due to direct neural spread from nasopharynx via trigeminal nerve
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Respiratory disease, abortion and neurological disease in foals
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Acute respiratory disease characterised by nasal discharge and lymphadenopathy in calves
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A variety of clinical diseases
Frage 38
Frage
What is the most important viral cause of abortion in horses worldwide?
Antworten
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Equine herpesvirus 1
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Equine herpesvirus 4
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Bovine herpes virus 1
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Equine sarcoid virus
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African horse sickness
Frage 39
Frage
When do abortions usually occur in EHV 1?
Antworten
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Usually late gestation
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Usually early gestation
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Usually mid gestation
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Abortions do not usually occur
Frage 40
Frage
How can you prevent EHV1 from spreading
Antworten
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Small groups based on foaling date
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Pregnant mares be kept separate from other horses
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There is a vaccine available
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Cull all animals with the virus
Frage 41
Frage
How long is the aborting mare infectious for?
Antworten
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1‐2 days from reproductive tract and up to 2 weeks from the respiratory tract
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5-10 days from reproductive tract and up to 6 weeks from the respiratory tract
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5‐6 days from reproductive tract and up to 4 weeks from the respiratory tract
Frage 42
Frage
How can EHV1 and EHV4 be differentiated?
Antworten
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ELISA test for antibody
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Electron microscopy
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Viral culture
Frage 43
Frage
Which age group of horses show the most severe clinical signs to EHV4
Antworten
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Weanling and yearlings (juveniles)
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Adults
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Old horses
Frage 44
Frage
Feline herpesvirus 1 (Feline rhinotracheitis) causes?
Antworten
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acute respiratory disease characterised by nasal discharge, ocular discharge, sneezing, dyspnoea and occasional oral ulcers
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fatal meningoencephalitis in kittens thought to be due to direct neural spread from nasopharynx via trigeminal nerve
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abortion of kittens during late gestation
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generalised skin lesions. Nodules & necrosis of the superficial epidermis
Frage 45
Frage
Gallid herpesvirus 1 is also known as?
Antworten
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Infectious laryngotracheitis
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Gallid rhinopneumonitis
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Gallid encephalitis virus
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