Figure 2. A model to prevent the spread of SARS-CoV-2 using the power of “immune survivors.” The proliferation of SARS-CoV-2 occurs if “immune survivors” do not interrupt the contact between healthy individuals and patients with COVID-19. In contrast, a small number of “immune survivors” can block the spread of the infection if we identify and arrange “immune survivors” and patients with COVID-19 at an earlier point in time.