Lecture 15

Question 1

What animals get infected with African swine fever

Answer 1

African pigs

Question 2

What is African swine fever transmitted by

Answer 2

Soft ticks as well as animal to animal transmission

Question 3

Where can clinical signs of African swine fever only be seen

Answer 3

Feral pigs and European wild boar

Question 4

What animals are asymptomatic carriers of African swine fever

Answer 4

Wild African suids

Question 5

How is African swine fever transmitted

Answer 5

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

Question 6

What are the 3 categories of African swine fever

Answer 6

1. Highly virulent isolates
2. Moderately virulent isolates
3. Low-virulence isolates

Question 7

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

Answer 7

1. Sudden death with few lesions

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

Question 8

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

Answer 8

1. Fever, thrombocytopenia and leukopenia my be transient

2. Abortions

Question 9

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

Answer 9

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

Question 10

How to diagnose African swine fever

Answer 10

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

Question 11

Where did Ranavirus evolve

Answer 11

Fish which subsequently infected amphibians and reptiles

Question 12

What is white spot syndrome virus

Answer 12

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

Question 13

What are the control measures for suspected outbreaks (4)

Answer 13

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

Question 14

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

Answer 14

1. Contact during transport, shipping movement

2. Swill feeding

Question 15

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

Answer 15

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