A Shot to Protect Against H.I.V.

A single shot every two months prevents H.I.V. better than the most commonly used daily pill, Truvada, researchers reported on Tuesday. At the moment, Truvada and Descovy, made by Gilead Sciences, are the only drugs approved by the Food and Drug Administration for prevention of H.I.V. infection, a strategy called PrEP. Gilead has heavily been…

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