Women and at - risk groups take Truvada daily to prevent HIV transmission . Studies show pill can help reduce infection rates by more than 90 % when taken daily . `` These guidelines represent an important step toward fully realizing the promise of PrEP . Health experts say they believe this will ` ` alter the course of the current HIV epidemic ''
Women and at - risk groups take Truvada daily to prevent HIV transmission . Studies show pill can help reduce infection rates by more than 90 % when taken daily . Health experts say they believe this will ` ` alter the course of the current HIV epidemic ''