CAIE IGCSE Biology 10.1.5 Controlling Disease Spread

Practise explaining how clean water, food hygiene, personal hygiene, waste disposal and sewage treatment interrupt transmission.

Exam points

link safe water and sewage treatment to removal or killing of water-borne pathogens
link handwashing, clean equipment and separated raw food to reduced direct or food-borne transfer
link regular waste disposal and vector control to fewer breeding sites or contacts with pathogens

[Maximum number: 1]

These actions may be important in controlling the spread of disease.
1 washing hands after going to the toilet
2 disposing of waste frequently
3 using separate cutting boards for meat and salad
4 disposing of raw sewage into a river
Which would help control the spread of disease?

1, 2, 3 and 4

1, 2 and 3 only

2 and 3 only

4 only

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10.1.5—Controlling disease spread question 1