Dr. Fauci says herd immunity is 'unattainable' for COVID-19. Here's why

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Achieving classical herd immunity against SARS-CoV-2 is "unlikely" despite the effectiveness of vaccines, according to health experts. Herd immunity refers to how much of the population needs to be vaccinated or infected with COVID-19 in order to "eradicate or eliminate" the disease. The country's top infectious disease expert Dr. Anthony Fauci spoke about herd immunity during an interview with KCRA 3 and the National Press Foundation.