Former President Jimmy Carter delivers a lecture on the eradication of the Guinea worm at London's House of Lords on Feb. 3. The lecture title: "Final Days of the Fiery Serpent: Guinea Worm Eradication." Eddie Mullholland/WPA Pool/Getty Images hide caption

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Jimmy Carter May Soon Get His 90th Birthday Wish: No More Guinea Worm

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President Obama, first lady Michelle Obama and former presidents Jimmy Carter and Bill Clinton at the March on Washington 50th anniversary celebration. Charles Dharapak/AP hide caption

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