FILE - In this Nov. 4, 2010 photo, Ajak Kuol Nyamchiek, 7, watches while John Lotiki, a nurse with the Carter Center, bandages the blister on her leg from where a guinea worm is slowly emerging in Abuyong, Sudan. (AP Photo/Maggie Fick, File)

FILE - Former U.S. President Jimmy Carter poses for photographers with a water pipe filter, that is used to combat guinea worm disease, during a news conference to mark the launch of a campaign to eradicate the disease in central London, Wednesday, Oct. 5, 2011. (AP Photo/Lefteris Pitarakis, File)

Aid workers with the Carter Center work in the community to raise awareness about Guinea worm and a family impacted in Jarweng, South Sudan, on May 13, 2023. (AP Photo/Sam Mednick)

FILE - In this Nov. 4, 2010 photo, children collect drinking water from a pond using filters provided to them by The Carter Center's guinea worm eradication program in the remote village of Lengjak, in Awerial County, Lakes State, Southern Sudan. (AP Photo/Maggie Fick, File)

FILE - Carter Center intern Sarah Ellis Peed helps assemble medical kits to fight Guinea worm disease at a warehouse in Atlanta, Wednesday, July 28, 2004. (AP Photo/John Bazemore, File)

FILE - In this March 9, 2007 file photo, a guinea worm is extracted by a health worker from a child's foot at a containment center in Savelugu, Ghana. (AP Photo/Olivier Asselin, File)

FILE - Former US President Jimmy Carter listens during a video interview with the Associated Press via a laptop at a hotel in London, Tuesday, Feb. 2, 2016. (AP Photo/Kirsty Wigglesworth, File)

A young person tends to the animals in a community where there was Guinea worm in Jarweng, South Sudan, on May 13, 2023. The Carter Center's staff and volunteers walked house-to-house in the community to raise awareness of the Guinea worm in the area. (AP Photo/Sam Mednick)

Nyingong Aguek, who contracted Guinea worm after she and her two sons drank swampy water while traveling in 2022, poses in Jarweng, South Sudan, on May 13, 2023. (AP Photo/Sam Mednick)

People refill water containers in a community where there was Guinea worm in Jarweng, South Sudan, on May 13, 2023. The Carter Center's staff and volunteers walked house-to-house in the community to raise awareness of the Guinea worm in the area.(AP Photo/Sam Mednick)

Nyingong Aguek, who contracted Guinea worm after she and her two sons drank swampy water while traveling in 2022, shows her legs where four worms had emerged from her left leg leaving scars in Jarweng, South Sudan, May 13, 2023. (AP Photo/Sam Mednick)