For only the second time since the start of a global epidemic, a person was reported this month to have been cured of H.I.V., the virus that causes AIDS. Scientists and activists had almost given up on reaching that milestone. Here’s a look at how we got to this point. Guest: Peter Staley, a longtime AIDS activist. For more information on today’s episode, visit nytimes.com/thedaily.

Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app.

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.