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failed vaccination

12/04/2017 / By News Editors

Natural vs. artificial herd immunity: What have failed vaccination programs taught us?

Herd immunity is a concept by which an infectious agent can no longer spread across a population because a sufficiently large percentage of individuals have immunity, either from a history of exposure to the wild-type of the infectious agent, or due to acquired immunity from vaccination with a vaccine designed to protect against the wild-type. […]

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