Pfizer boosts optimism for COVID-19 vaccine
A COVID-19 vaccine that is 90% effective? That is the hope from Pfizer today, in announcing its preliminary COVID-19 vaccine analysis. The data has yet to be published. Host Marco Werman speaks with Saad Omar, director of Yale's Institute for Global Health, about the development. Omar is also active in vaccine policies with the National Academy of Medicine and the World Health Organization.