FILE PHOTO: Former U.S. President Jimmy Carter delivers a lecture on the eradication of the Guinea worm, at the House of Lords in London, Britain February 3, 2016. REUTERS/Neil Hall/File Photo
FILE PHOTO: Former U.S. President Jimmy Carter delivers a lecture on the eradication of the Guinea worm, at the House of Lords in London, Britain February 3, 2016. REUTERS/Neil Hall/File Photo