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WHO Changes the Definition of Herd Immunity

  • January 01, 2021

In June the World Health Organization posted an informational page on COVID-19 and included a definition of herd immunity that has been the standard for infectious diseases for decades, being an “indirect protection from an infectious disease that happens when a population is immune either through vaccination or immunity developed through previous infection.” Many high-profile medical organizations also say that herd immunity can be achieved through natural infection. As of...
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