Coronavirus immunity offers perils and promise – CNN

Dr. Tom Frieden, an infectious disease physician, was director of the CDC from 2009 to 2017 during the H1N1, Ebola, and Zika emergencies. He is President and CEO of Resolve to Save Lives (an initiative of Vital Strategies) and Senior Fellow for Global Health at the Council on Foreign Relations. Twitter: @DrTomFrieden
(CNN)Although we still have much to learn about immunity, in recent days there have been important hints and encouraging developments. Individual and group immunity indicate the p…

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