Reducing and Preventing the Spread of Disease

This final lesson in the Infection and Response topic brings together all the methods used to reduce and prevent the spread of communicable diseases. It covers hygiene, vaccination programmes, international disease control, and the interplay between communicable and non-communicable diseases — as required by the AQA GCSE Combined Science Trilogy specification (8464).

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Overview of Disease Prevention Strategies

There are several broad strategies for preventing the spread of communicable diseases:

graph TD
    A[Disease Prevention Strategies] --> B[Hygiene and Sanitation]
    A --> C[Vaccination]
    A --> D[Isolation and Quarantine]
    A --> E[Vector Control]
    A --> F[Safe Food and Water]
    A --> G[Drug Treatment and Prevention]
    A --> H[Public Health Education]

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1. Hygiene and Sanitation

Good hygiene is the simplest and most effective way to reduce disease transmission: