Virology > Lecture 15 > Flashcards

Lecture 15 Flashcards

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1
Q

What animals get infected with African swine fever

A

African pigs

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2
Q

What is African swine fever transmitted by

A

Soft ticks as well as animal to animal transmission

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3
Q

Where can clinical signs of African swine fever only be seen

A

Feral pigs and European wild boar

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4
Q

What animals are asymptomatic carriers of African swine fever

A

Wild African suids

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5
Q

How is African swine fever transmitted

A
  1. Direct contact of infected pigs
  2. Environmental contamination with products
  3. Ingestion of contaminated pork products
  4. Ornithodoros soft tick
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6
Q

What are the 3 categories of African swine fever

A
  1. Highly virulent isolates
  2. Moderately virulent isolates
  3. Low-virulence isolates
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7
Q

Clinical signs of African swine fever (2)(paracute/acute)

A
  1. Sudden death with few lesions

2. Acute cases: high fever, anorexia, lethargy, weakness and recumbency

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8
Q

Clinical signs of African swine fever (2)(subacute)

A
  1. Fever, thrombocytopenia and leukopenia my be transient

2. Abortions

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9
Q

Clinical signs of African swine fever (4)(chronic)

A
  1. Intermittent low fever, appetite loss and depression
  2. emaciation and shunting
  3. Coughing, diarrhoea, vomiting
  4. Fatality
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10
Q

How to diagnose African swine fever

A
  1. No effective vaccines
  2. No effective treatment
  3. Tests and slaughter only viable option
  4. Detect antibodies by ELSIA
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11
Q

Where did Ranavirus evolve

A

Fish which subsequently infected amphibians and reptiles

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12
Q

What is white spot syndrome virus

A

Responsible for causing white spot syndrome in a wide range of crustaceans

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13
Q

What are the control measures for suspected outbreaks (4)

A
  1. Isolating and monitoring
  2. Restricted movement
  3. Safety disposal
  4. Disinfection
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14
Q

How did the first outbreak happen in Eastern Europe (2)

A
  1. Contact during transport, shipping movement

2. Swill feeding

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15
Q

What are the 5 types of Iridoviridae and what do they infect

A
  1. Chlorriridovirus - invertebrates
  2. Iridovirus - invertebrates
  3. Lymphocystivirus - fish
  4. Megalocytivirus - fish
  5. Ranavirus - Fish, frogs
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