1

Question 1

What is the principle of AGID (agar gel immunodiffusion) test:

Answer 1

• Migration of Ag and Ab towards each other through an agar gel matrix
  *When antigen and specific antibodies come in contact, they combine and form a precipitate trapped in the gel-visible line (positive test)
• Negative test shows no precipitation

Question 2

Division of the media used for cell culture:
a) Liquid, solid
b) Natural, synthetic
c) Protein-based, sugar-based

Answer 2

** a) liquid, solid **

Question 3

In blocking ELISA positive result is:
a) Change of colour
b) No colour

Answer 3

** b) No colour **

Question 4

Give an example of facultative pathogens

Answer 4

Cause infectious disease under certain circumstances
Bacteria examples: Salmonella, Staphylococcus spp., Listeria spp.

Question 5

Animal notifiable diseases are reported to:
a) Organization of international disease elimination
b) World health organization
c) World organization for animal health

Answer 5

** c) World organization for animal health **

They are partners with WHO and the other option I can’t find online

Question 6

What are stages of epizootic process:

Answer 6

• Interepizootic stage
• Preepizootic stage
• Ascending stage
• Culmination stage
• Descending stage
• Postepizootic stage

Question 7

What is epizootiological triad:

Answer 7

• Animal populations (heard, flock)
• Etiological agents and factors of mass disease
• Environmental factors

Question 8

What is abortive infection:
a) infection causing abortion
b) infection that disappear after prodromal period
c) latent infection in pregnant animals

Answer 8

** b) infection that disappear after prodromal period **

Question 9

What are ways of etiological agents transmission:

Answer 9

Horizontally
* Directly (contact, projection)
* Indirectly (vehicle borne, vector borne)
* Airborne
Vertically
* Transmission in utero

Question 10

What test is virological:
a) virus neutralization
b) PCR
c) Western blot

Answer 10

b) PCR