Vaccination & Public Health Flashcards
1
Q
What are the objectives of vaccination programme? 4 points
A
- To reduce mortality / morbidity from vaccine preventable infections
- To protect selected high risk groups
- To contain or eliminate an infection in a population
- To eradicate an infectious agent
2
Q
What is “Basic Reproductive Number, R0” defined as?
A
The average number of individuals directly infected by an infectious case during the infectious period in a totally susceptible population
3
Q
What is “Effective Reproductive Number, R” defined as?
A
The actual average number of secondary cases per primary case observed in a population
4
Q
Define “Herd Immunity”
A
Level of immunity in the population which protects the whole population
