What Do We Really Know About Plasma?
President Donald Trump expanded access to a coronavirus treatment that involves blood plasma donated by people whoβve recovered from Covid-19. But while convalescent plasma, as itβs known, is a promising therapy, researchers donβt yet fully understand how well it works. Michelle Fay Cortez explains what the announcement means, and the concerns that agencies like the FDA are letting pressure from the White House, rather than science, guide their decisions.
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