Will Herd Immunity Kick In to Help Lower COVID-19 Cases?

June 10, 2020

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It's tough to know how effective herd immunity will be when dealing with the novel coronavirus, the Associated Press reports. Herd immunity prevents easy spread of a disease through collective immunity, typically the result of a large number of the population being inoculated by a vaccine, or having contacted and then survived the disease. Usually at least 70 percent of the population is required to be immune to have a true herd immunity. However, at this point it's unknown whether survivors of COVID-19 get immunity even after they recover. Experts are still unsure if survivors are protected from ever getting it again. Herd immunity is also contingent on how contagious the disease is. Highly contagious diseases like COVID-19 would require a higher number of immune people before herd immunity was possible.