Explain four ways to prevent the spread of cholera and define immunity.

Here are the answers to question 5:

a) Four ways of preventing the spread of cholera are:

1. Ensuring access to safe and clean drinking water.
2. Practicing proper sanitation, including the use of latrines and safe disposal of human feces.
3. Maintaining good food hygiene, such as cooking food thoroughly and washing fruits and vegetables.
4. Regular handwashing with soap and clean water, especially before eating or preparing food and after using the toilet.

b) Immunity is the ability of an organism to resist a particular infection or toxin by producing specific antibodies or sensitized white blood cells. It is the body's natural defense mechanism against diseases.