preventing the spread

Question 1

how would u prevent cholera?

Answer 1

sterilising water

Question 2

describe the process of sterilising water:

Answer 2

• chemicals or UV light kill the bacteria causing cholera

Question 3

name 4 ways to prevent spread of diseases provide examples for each:

Answer 3

1- sterilising water- cholera
2- hygiene food- salmonella
3-hygiene personal- athletes foot
4-vaccination- measles

Question 4

define immunity:

Answer 4

when you have protection from a disease

Question 5

how do vaccines work?

Answer 5

vaccination introduce a weakened version of the pathogen in ur body.

the body immune system will respond to the weakened pathogen and develop immunity over it