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Diseases

What health and disease mean, how communicable diseases spread, how they are prevented with hygiene and vaccines, and first aid.

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What this chapter covers

  1. Health and Disease Categories

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    • Health and DiseaseComplete physical, mental and social well-being.
    • Categories of DiseasesCommunicable spread by germs; non-communicable cannot.

  2. Communicable Diseases

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    • Spread of Communicable DiseasesPathogens spread directly, indirectly, by vectors.
    • Diseases Caused by VirusesInfluenza, measles and AIDS (HIV).
    • Diseases Caused by VectorsMalaria, dengue and chikungunya via mosquitoes.

  3. Disease Prevention and Vaccination

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    • Preventive MeasuresPublic hygiene and a healthy environment.
    • VaccinationVaccines make WBCs produce antibodies.
    • ImmunizationArtificial resistance to disease via vaccines.

  4. First Aid and Harmful Habits

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    • First Aid ProceduresImmediate care before the doctor arrives.
    • Harmful HabitsTobacco, alcohol and drugs damage health.

Try a sample question

What is meant by a vector in the context of communicable diseases?

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