Lecture 1

Question 1

Explain the prevention of a disease

Answer 1

Immunise people
improve genetics
PPE

Question 2

Explain the control of disease

Answer 2

Remove reservoir 
Early detection 
prevention of the disease 
decrease communicability (decrease spread requiring contact)
increase resistance 
early detection and diagnosis

Question 3

Define Eradication of disease

Answer 3

Vaccination (whole herd immunity)
depopulate (kill the effected animals)
selective slaughter
quarantine 
mass treatment 
mass immunisation

Question 4

List the aims of prevention

Answer 4

1. exclude a disease from a population of unaffected animals
2. exclude the agent from areas where it is not present
3. protect unaffected animals when the disease is present

Question 5

When should you vaccinate or not vaccinate?

Answer 5

If its safe and effective their use should be considered if:

1. incidence is widespread or increasing in spite of present control measures
2. the technology to eradicate is not available
3. It does not cause subclinical or carrier states and doesn’t interfere with disease detection
4. The disease is endemic

Question 6

List the factors which influence the efficacy for vaccines

Answer 6

the % of animals that will get vaccinated
route of ad (administration)
way vaccine is stored and handled
% of immune competent animals in population