David Ho: The Man Who Could Beat AIDS

David Ho has already helped the world control HIV with powerful new drugs. For his next trick, he'd like to eradicate it

Henry Leutwyler for TIME

Ho with a model of the antibody that he believes may prevent HIV infection.

Dr. David Ho was sitting in the audience during an AIDS meeting in 2007 when the presenter flashed a cartoon onscreen to make a point. Along with his colleagues, Ho chuckled at the image of a blindfolded baseball player swinging mightily at an incoming pitch. But as amused as the scientists were, they were sobered too; they knew that the player in the cartoon was them. A swing and a miss, the image was saying, one of many in the long battle against AIDS.

Ho certainly got the message. For nearly a quarter of a century, he and other AIDS scientists...

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