CAIE IGCSE Biology 10.1.12 Role of Vaccination in Controlling Questions
Widespread vaccination can reduce transmission and protect people who are still susceptible. Use case data to judge its effect.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- explain how vaccination reduces disease spread by interrupting transmission and building population immunity
- interpret case data comparing vaccinated and unvaccinated groups or trends over time to judge vaccine effectiveness
- explain why vaccination may continue when cases fall to protect susceptible people and prevent renewed transmission
CAIE IGCSE Biology 10.1.12 Role of Vaccination in Controlling Questions question 1
Cholera is a transmissible disease.
A study was designed to test the effectiveness of a cholera vaccine in an area where outbreaks of cholera occur frequently.
The doctors gave some people in this area the new vaccine.
There was an outbreak of cholera in the area two months after the new vaccine was given.
The people who had symptoms of cholera were monitored in hospital for two days.
Some of the infected people had received the new vaccine and others had not received the vaccine.
The results are shown in Fig. 4.1.
Fig. 4.1
Using the information in Fig. 4.1, discuss how effective the vaccine was at preventing the symptoms of cholera.
All question bank results loaded