Public Health

Question 1

What is herd immunity?

Answer 1

Indirect protection from infectious disease as large % of population become immune - provide protection to individuals who are not immune

Question 2

What makes up the epidemiological triangle?

Answer 2

Agent
Host
Environment

Question 3

Define the two nutrient deficient states; ‘kwashakor’, ‘marasmus’

Answer 3

Diet lacks high quality protein - mostly in children - can cause oedema
Diet low in protein and calories = low weight and wasting

Question 4

How to calculate the ‘incidence rate’…

Answer 4

Number of new cases of disease occurring in population during a specific period of time / number of people exposed to risk of developing disease during a period of time

Question 5

How to calculate the ‘prevalence rate’…

Answer 5

Number of cases of disease present in population at specific point in time / number of persons at risk of having disease at point in time