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Herd Immunity for Smallpox

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Uploaded by on Jul 9, 2009

http://demonstrations.wolfram.com/HerdImmunityForSmallpox/

The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.

A population has "herd immunity" when the immune population is high enough so that if an infection is introduced, it dies out without building up. You can see this by sliding the initial immune fraction until the red graph does not increase in the illus...

Contributed by: Keith Stroyan

Category:

Education

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Standard YouTube License

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