Dec 18, 2003

Scientific American: 'Six Degrees of Immunization' Strategy Proposed : "The researchers instead propose a tactic known as acquaintance immunization. In it, a percentage of the population is selected at random and asked to identify a friend. Those friends, in turn, are vaccinated. According to the team's calculations, because super-spreaders know so many people, there is a high probability that they will be named at least once. As a result, immunization of a much smaller fraction of the population can successfully halt disease transmission."

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