07/07/2020 12:00 AM EDT
Source: U.S. Government Accountability Office (GAO). Published: 7/7/2020. This two-page document explains herd immunity, and how increasing the immunity of a population to an infectious disease like COVID-19 can slow the spread of infection and protect those most vulnerable. However, with limited information about important aspects of COVID-19, there are challenges to understanding the implications of herd immunity in the current pandemic. (PDF)
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