COVID-19 Public Health December 1, 2020Flip through the charts below to see how the intersection of vaccine effectiveness and the population’s natural immunity can help estimate how many people need to be vaccinated to move us back toward normalcy. Interactive We strive to provide individuals with disabilities equal access to our website. If you would like information about this content we will be happy to work with you. Please email us at: McKinsey_Website_Accessibility@mckinsey.com To read the article, see “When will the COVID-19 pandemic end?,” November 23, 2020.