"We are now on the track to absolutely eliminate pediatric HIV infection globally."
Where there is a will
Walk around Gayle's office today it's lined with honorary university degrees and awards from Desmond Tutu and Barack Obama.
She points to a photograph of herself with Nelson Mandela during a trip with the former U.S. secretary of health to South Africa -- an experience she describes as "electric."
But among the high-brow accolades, Gayle remains focused on simple achievements such as education, access to clean drinking water, and shelter.
"We believe that it's possible to eliminate extreme poverty over the next couple of decades. We know what needs to be done and we have the tools," she said, adding: "But do we have the will as a world community to do it?"