President Carter tries to comfort 6 year old Ruhama Issah at Savelugu Hospital as a Carter Center Volunteer, Adams Bawa, dresses her extremely painful guinea worm wound.

ABU DHABI — When Northern Nigeria was down to its last remaining cases of Guinea worm disease, Dr. Adamu Keana Sallau and his team had to get creative. As the Carter Center director for integrated health programs in the country’s Imo and Abia States in Nigeria, Sallau knew that stigma and far flung geography would made it difficult to spot infections — and every case had to be found to end the disease.
Sallau came up with a locally tailored strategy. Community members who shared information about a new case would receive 3,000 Naira ($8.50) as reward. But if the health workers found a case that hadn’t been reported, they would take a goat from the village — equivalent to about 5,000 Naira ($14) in wealth.
Usually, it took just one goat for communities to get serious about reporting, he said.
Last week, Sallau was among half a dozen other frontline health …