Maintaining political will at home and abroad is key to alleviate the suffering of millions, he said earlier in an interview.
Carter was at the museum and library to talk about the opening of a new exhibit, "Countdown to Zero," about the world's efforts to eradicate a number of diseases.
When The Carter Center targeted Guinea worm as on that could be eradicated in the 1980’s there were 3.5 million cases in 21 countries. Carter announced Wednesday that there are now only three countries where the disease remains, down from four last year. There were 25 reported cases in 2016 in remote villages in Ethiopia, Chad and South Sudan.
He told the House of Lords in London last year that his prayer was that he live long enough to see the last case of Guinea worm. During an exclusive interview with The Atlanta Journal-Constitution, he said the cancer that he was treated for has not reappeared.