b) Even though Australia is well immunised, infection outbreaks can still spread if there are many unvaccinated people in the same place for a long time. When a high number of people in the public are immunised, it becomes harder for diseases to spread and this process is called herd immunity. When vaccine protection is not guaranteed, more people need to be immunized to attain herd immunity and prevent outbreaks. Australia focuses on attaining high vaccine uptake within small local areas as opposed to concentrating on a national average as it is more effective in influencing herd immunity. Children that are not vaccinated in Australia due to large family sizes, allergies and not using childcare, pose a threat to achieving herd immunity.
c) The
c) The