The Science-Backed Plan to Distribute a Covid-19 Vaccine

Experts who designed the plan took equity concerns to heart

Credit: Kilito Chan / Getty Images

Once a Covid-19 vaccine is proven safe and effective, the next step will be distributing it to the people who need it most urgently. Opinions differ on who — and how — to prioritize, on both a national and an international level. On Friday, a committee from the U.S…