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Data about the prevalence of guinea worm disease was provided through an innovative, village-based monthly reporting system pioneered by the campaign. A cost-benefit analysis was prepared by the Africa Human Development Department at the World Bank.
Health Condition: In 2005, fewer than 11,000 cases of Guinea worm were reported in the nine remaining endemic countries. Just three countries have reported more than 1,000 cases - and the vast majority of the cases are in Sudan, where civil war has impeded progress. Before the start of the campaign in 1986, an estimated 3.5 million people in 18 endemic countries in Africa and Asia were infected with Guinea worm, and 120 million were at risk.
the provision of safe water (through deep well digging, applying larvicide, and purifying water through cloth filters);
case containment, management, and surveillance.
Impact: The eradication efforts have led to a 99.7 percent drop in Guinea worm prevalence. In 2005, fewer than 11,000 cases were reported, compared with an estimated 3.5 million infected people in 1986. By 1998, the campaign prevented between 9 million and 13 million cases of Guinea worm. As of 2005, the campaign has prevented more than 63 million cases of Guinea worm disease, reduced the number of endemic villages by 91 percent, and stopped the transmission of the disease in 11 of the 20 endemic countries.
Cost and Cost-Effectiveness: The total cost of the program between 1986 and 1998 was $87.4 million. The estimated cost per case was $5 to $8. The World Bank determined that the campaign has been highly cost-effective and cost-beneficial. The economic rate of return based on agricultural productivity alone has been estimated at 29 percent. The estimated cumulative cost of the campaign as of 2004 was approximately $125 million.