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4 Cards in this Set
- Front
- Back
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Contagious diffusion |
The rapid, widespread diffusion of a disease like a wave, from a centre outwards. Depends upon direct contact with those infected |
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Hierarchical diffusion |
When a disease spreads through from a person of power or higher susceptibility to another in a levelled pattern |
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Network diffusion |
Occurs when a disease spreads along transportation or social networksExample: aids in southern Africa, malaria in USA at airports, H1N1 Flu |
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Relocation diffusion |
Occurs when the carrier of a disease leaves the area in which it was contracted and moves into new areas, causing new infections |
