Controlling the Spread of Disease (Cambridge (CIE) IGCSE Biology): Revision Note
Exam code: 0610 & 0970
Controlling the spread of disease
The simplest way to prevent disease is to stop pathogens from spreading
This means using simple measures such as good hygiene and effective sanitation and waste disposal to contain pathogens and dispose of them safely
Preventing the spread of disease table
Measure to prevent spread | Importance |
|---|---|
Clean water supply | Safe drinking water ensures water is free of pathogens which will prevent waterborne diseases e.g. cholera (opens in a new tab) |
Hygienic food preparation | Washing hands with soap, correct food cooking methods and hygienic preparation of food will help to prevent contamination of food with harmful bacteria and fungi |
Personal hygiene | Washing with soap or using tissues to catch sneezes and coughs and then disposing of them will reduce transmission of diseases such as colds and flu |
Waste disposal | Proper disposal of waste e.g. food waste will reduce the prevalence of pests e.g. flies that can act as vectors for transmissible diseases |
Sewage treatment | Treatment of sewage removes harmful pathogens from waste before it is released into the environment. This reduces the risk of diseases spreading in contaminated water |
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