5252431
Descripción
Test por Kathryn Borg, actualizado hace más de 1 año
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Creado por Kathryn Borg
hace alrededor de 8 años
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Pregunta 1
Pregunta
Correctly describe the family of Poxviridae
Respuesta
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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
Pregunta 2
Pregunta
What are the two sub-families within Poxviridae?
Respuesta
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Chordopoxvirinae
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Entomopoxvirinae
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Alphaherpesvirinae
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Papillomavirus
-
Orbivirus
Pregunta 3
Respuesta
-
Pock
-
Pustule
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Ulceration
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Macule
Pregunta 4
Pregunta
What is the correct pathogenesis of a pock lesion?
Respuesta
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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
Pregunta 5
Respuesta
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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
Pregunta 6
Pregunta
Poxvirus transmission between animals may occur by?
Respuesta
-
Mechanical transmission
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Respiratory route by droplets
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Via abraded skin
Pregunta 7
Pregunta
Label this diagram correctly. Matching the correct genus with the virus groups (a-f)
Respuesta
-
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
Pregunta 8
Respuesta
-
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
Pregunta 9
Pregunta
Sheeppox, Lumpy skin disease and Goat pox are closely related viruses that are indistinguishable by serological assays
Respuesta
- True
- False
Pregunta 10
Pregunta
How might an animal become infected by a Capripoxvirus (sheeppox, lumpy skin disease and goat pox)?
Respuesta
-
Skin abrasions
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Inhalation of aerosols
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Vector transmission
-
Gastrointestinal tract infection
Pregunta 11
Pregunta
Where are the Capripoxviruses (sheeppox, lumpy skin disease and goat pox) endemic to?
Respuesta
-
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
Pregunta 12
Pregunta
What is the pathogenesis of the Capripoxviruses (sheeppox, lumpy skin disease and goat pox)?
Respuesta
-
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
Pregunta 13
Pregunta
What is the incubation period of the Capripoxviruses (sheeppox, lumpy skin disease and goat pox)?
Respuesta
-
~ 1 week
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~ 3 weeks
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~ 2 weeks
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~ 1 day
Pregunta 14
Pregunta
How might fowl pox be transmitted between animals?
Respuesta
-
Mechanical transmission via mosquitos
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Aerosol transmission
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GIT transmission
Pregunta 15
Pregunta
Fowl pox is found within what genus of poxviridae?
Respuesta
-
Avipoxvirus
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Capripoxvirus
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Orthopoxvirus
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Parapoxvirus
Pregunta 16
Pregunta
What is the Parapoxviruses Orf also called?
Respuesta
-
Scabby Mouth
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Contagious pustular dermatitis
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Contagious ecthyma
Pregunta 17
Pregunta
What is this disease most likely to be if it is from the poxviridae family?
Respuesta
-
Orf
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Bovine Papilloma virus
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Foot and mouth disease
Pregunta 18
Pregunta
What is true of the pathogenesis and epidemiology of Orf?
Respuesta
-
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
Pregunta 19
Pregunta
What is Myxomatosis?
Respuesta
-
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
Pregunta 20
Pregunta
Correctly describe the family of Asfarviridae?
Respuesta
-
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
Pregunta 21
Pregunta
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.
Respuesta
- True
- False
Pregunta 22
Pregunta
Which of the below viruses belong to the family Asfarviridae?
Respuesta
-
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
Pregunta 23
Pregunta
What animals can Asfarviridae infect?
Respuesta
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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)
Pregunta 24
Pregunta
Is a vaccine available for African Swine Fever Virus?
Respuesta
-
Yes
-
No
Pregunta 25
Pregunta
Where does the virus grow within the body?
Respuesta
-
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
Pregunta 26
Pregunta
Are there carriers of African swine fever virus?
Respuesta
-
Yes
-
No
Pregunta 27
Pregunta
Why might an animal with African Swine Fever Virus die?
Respuesta
-
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
Pregunta 28
Pregunta
Describe the Herpesviruses?
Respuesta
-
Enveloped double stranded DNA viruses
-
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
Pregunta 29
Pregunta
Why are the herpesviruses labile in environment and easily inactivated by heat, detergents, pH and drying?
Respuesta
-
They are enveloped viruses
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They are non-enveloped viruses
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They are capsulated viruses
Pregunta 30
Pregunta
How are Herpesviruses transmitted?
Respuesta
-
Close or mucosal contact for transmission (droplet)
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GIT transmission
-
Vector transmission
Pregunta 31
Pregunta
What is the key feature of Herpesviruses?
Respuesta
-
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
Pregunta 32
Pregunta
What are the sub families of Herpesviridae?
Respuesta
-
Alphaherpesvirinae
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Gammaherpesvirinae
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Betaherpesvirinae
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Deltaherpesvirinae
-
Alloherpesvirinae
Pregunta 33
Pregunta
Match the correct virus sub families to their features
Respuesta
-
Gammaherpesvirinae
-
Betaherpesvirinae
-
Alphaherpesvirinae
-
Deltaherpesvirinae
Pregunta 34
Pregunta
Bovine herpesvirus 1 (Infectious bovine rhinotracheitis virus) can manifest as which of the below clinical diseases?
Respuesta
-
Rhinotracheitis
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Generalised disease of newborn calves
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Enteritis
-
Abortion
-
Conjunctivitis
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Balanoposthitis
-
Vulvovaginitis
Pregunta 35
Pregunta
How is Bovine Herpesvirus 1 transmitted?
Respuesta
-
Respiratory route and cell associated viraemia to distant sites
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GIT route
-
Fomites
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Vector transmission
Pregunta 36
Pregunta
Bovine herpesvirus 2 -- Bovine mammillitis virus (Pseudo‐lumpy skin disease virus) can cause which of the below forms of clinical disease
Respuesta
-
Mammillitis. Lesions localised to the teats.
-
Generalised skin lesions. Nodules & necrosis of the superficial epidermis
-
Abortion
-
Rhinotracheitis
Pregunta 37
Pregunta
Bovine herpes virus 5 causes?
Respuesta
-
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
-
Acute respiratory disease characterised by nasal discharge and lymphadenopathy in calves
-
A variety of clinical diseases
Pregunta 38
Pregunta
What is the most important viral cause of abortion in horses worldwide?
Respuesta
-
Equine herpesvirus 1
-
Equine herpesvirus 4
-
Bovine herpes virus 1
-
Equine sarcoid virus
-
African horse sickness
Pregunta 39
Pregunta
When do abortions usually occur in EHV 1?
Respuesta
-
Usually late gestation
-
Usually early gestation
-
Usually mid gestation
-
Abortions do not usually occur
Pregunta 40
Pregunta
How can you prevent EHV1 from spreading
Respuesta
-
Small groups based on foaling date
-
Pregnant mares be kept separate from other horses
-
There is a vaccine available
-
Cull all animals with the virus
Pregunta 41
Pregunta
How long is the aborting mare infectious for?
Respuesta
-
1‐2 days from reproductive tract and up to 2 weeks from the respiratory tract
-
5-10 days from reproductive tract and up to 6 weeks from the respiratory tract
-
5‐6 days from reproductive tract and up to 4 weeks from the respiratory tract
Pregunta 42
Pregunta
How can EHV1 and EHV4 be differentiated?
Respuesta
-
ELISA test for antibody
-
Electron microscopy
-
Viral culture
Pregunta 43
Pregunta
Which age group of horses show the most severe clinical signs to EHV4
Respuesta
-
Weanling and yearlings (juveniles)
-
Adults
-
Old horses
Pregunta 44
Pregunta
Feline herpesvirus 1 (Feline rhinotracheitis) causes?
Respuesta
-
acute respiratory disease characterised by nasal discharge, ocular discharge, sneezing, dyspnoea and occasional oral ulcers
-
fatal meningoencephalitis in kittens thought to be due to direct neural spread from nasopharynx via trigeminal nerve
-
abortion of kittens during late gestation
-
generalised skin lesions. Nodules & necrosis of the superficial epidermis
Pregunta 45
Pregunta
Gallid herpesvirus 1 is also known as?
Respuesta
-
Infectious laryngotracheitis
-
Gallid rhinopneumonitis
-
Gallid encephalitis virus
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