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INFOGRAPHIC //

A New Epidemic Model

SARS revealed the existence of "super-spreaders," who can infect dozens of people. The same, it appears, goes for other infectious diseases.

By Michele Cohen Marill // Infographic by Flying Chilli // Winter 2014
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When an infectious disease outbreak occurs, public health authorities are keen to determine its R₀ value: the reproductive number of the pathogen, or how many people will become infected from contact with one individual. Yet with SARS and other respiratory diseases, it turns out that the R₀ value tells only part of the story about a disease’s spread.

Click the infographic for an enlarged image. Super Spreaders infographic

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