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Population and the Environment

Health, Morbidity and the Epidemiological Transition

  • 5 things to know
  • Component 2

Overview

Recall questions on the WHO definition of health, mortality and morbidity and how they differ between low- and high-income countries, and on the epidemiological transition, its ages of pestilence and famine, receding pandemics and degenerative diseases, and its economic and social drivers.

What you need to know

Answer each one before you reveal it.

Your recallNot started
Key term

According to the WHO definition, what does 'health' encompass beyond the absence of disease?

Key term

What does the term morbidity refer to?

Key term

What characterises the 'age of pestilence and famine' in the epidemiological transition?

Key term

How does economic development drive the epidemiological transition?

Process

Define mortality and morbidity, and explain how causes of death differ between low-income and high-income countries.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    According to the WHO definition, what does 'health' encompass beyond the absence of disease?

    Model answer

    Health is a state of complete physical, mental and social well-being, not merely the absence of disease or infirmity.

  2. 2

    Define mortality and state how it is typically expressed.

    Model answer

    Mortality is the number of deaths in a population, often expressed as a rate per 1000 people per year.

  3. 3

    What does the term morbidity refer to?

    Model answer

    Morbidity refers to the incidence or prevalence of disease or illness within a population.

  4. 4

    How do the main causes of death differ between low-income and high-income countries?

    Model answer

    Low-income countries have higher death rates from infectious diseases and maternal/child health issues, while high-income countries have higher proportions of deaths from non-communicable diseases.

  5. 5

    What types of diseases dominate morbidity patterns in tropical and low-income regions compared to higher-income countries?

    Model answer

    Infectious diseases dominate in tropical and low-income regions, while chronic conditions predominate in higher-income countries.

  6. 6

    Define the epidemiological transition.

    Model answer

    The epidemiological transition describes the shift in disease patterns from predominantly infectious and parasitic diseases to chronic and degenerative diseases as a country develops economically and socially.

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