Controlling the Spread of Disease (CIE IGCSE Biology: Co-ordinated Sciences (Double Award))

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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
Measure to prevent the spread Importance

Clean water supply

Safe drinking water ensures water is free of pathogens which will prevent waterborne diseases e.g. cholera.

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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Emma

Author: Emma

Expertise: Biology

Prior to working at SME, Emma was a Biology teacher for 5 years. During those years she taught three different GCSE exam boards and two A-Level exam boards, gaining a wide range of teaching expertise in the subject. Emma particularly enjoys learning about ecology and conservation. Emma is passionate about making her students achieve the highest possible grades in their exams by creating amazing revision resources!