Salome Simon has slept with almost 50,000 men since Canadian-led researchers discovered she's one of those amazing Nairobi prostitutes whose immunity to HIV could be the key to beating AIDS. Two decades later, with no cure in sight, she's still a medical guinea pig but also a grandmother who is tired of plying her trade. Canada, she tells Stephanie Nolen, should help her find a decent job.
Sometimes it feels like helping people and making a notable difference in the world work at cross-purposes. For some bonus material on the futility of trying to help, check out the story of a medical volunteer in Darfur. (Should you need to after reading this, you can donate to Doctors Without Borders here.)