The head of the U.S. Food and Drug Administration walked back his claim that an experimental therapy had provided a dramatic benefit to Covid-19 patients, a rare reversal for an agency that has prided itself on rock-solid science and public…
The head of the U.S. Food and Drug Administration walked back his claim that an experimental therapy had provided a dramatic benefit to Covid-19 patients, a rare reversal for an agency that has prided itself on rock-solid science and public…