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MAKING THE MODERN WORLD
Stories about the lives we've made

module:Geography of health

Patterns of disease

page:The Hamer Sopel model

The spread of infection can be regarded as the changing balance between three types of individual. Those yet to catch the infection are ‘susceptibles’, those with the infection are ‘infectives’, and those who have recovered and are therefore immune are ‘recovereds’.

The Hamer Sopel model illustrates these relationships, using the population of an island. Susceptibles can be those who were born there or immigrants from other islands.

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