What is “Herd  Immunity?”  How Does It Work?

What is “Herd Immunity?” How Does It Work?

An article in the February 15, 2015 issue of The Journal of Clinical Infectious Diseases details what herd immunity is, how it is cultured and maintained, how immunity thresholds are calculated, and how those thresholds can be problematic for public health managers. The article provides “brief historical, epidemiologic, theoretical, and pragmatic health perspectives on the concept.”

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