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Announcement for 2017 Guinea Worm Disease Case Totals

Atlanta — The Carter Center, together with its partners, recognizes continued progress in the global Guinea worm eradication campaign. In 2017, there were only 20 villages with cases of Guinea worm disease in two countries, both in Africa, compared to 23,735 villages in 21 countries on two continents in 1991. From January through December 2017, there were 30 indigenous Guinea worm cases reported provisionally in isolated areas of Chad and Ethiopia. Provisional numbers are reported monthly by the ministries of health of the remaining endemic countries and compiled by The Carter Center.

 

Breakdown by country
The Republic of Mali has recorded zero human cases of Guinea worm disease for 25 months in a row, a major accomplishment. The Republic of South Sudan has reported zero cases for 13 consecutive months, also a major accomplishment for the world’s newest country.

 

The provisional reports for 2017 totaled 15 cases in Chad and 15 cases in Ethiopia, the only remaining countries reporting ongoing cases of the disease. All of the cases in Ethiopia occurred in migrant workers from Oromia region on an industrial farm in Abobo district of adjacent Gambella region, where in 2016 individuals drank unfiltered water from a contaminated pond, resulting in an outbreak from September through December 2017. (It takes 12-14 months for the worm to emerge after contaminated water has been consumed.) Intensive interventions, including treatment of the pond with larvicide (donated by BASF), were undertaken in immediate response. Ethiopian health authorities have redoubled their surveillance and response efforts to interrupt transmission this year.

 

While there was a slight increase in cases this year, the ministries of health of these four countries are to be commended for their persistence and skill in tracking down cases and rumors of cases, often in insecure areas. In 2016, Chad, Ethiopia, and South Sudan reported 25 cases.

 

Animal infections
While human cases are dwindling, the Center and its partners also are addressing the challenge of Guinea worm infections in animals. As a result of interventions and changes in the way people handle fish and infected dogs in Chad, dog infections there were down 19 percent in 2017, and there was a 31 percent decline in the number of worms emerging from infected dogs. This is the first year that the Chad program has seen a reduction in dog infection compared to the previous year since infected dogs were first found there in 2012. Smaller-scale infections in animals also were being tracked in Mali and Ethiopia. No animal infections were detected in South Sudan for the second consecutive year since a single infected dog was found there in a household with a human Guinea worm case in 2015.

 

Roles
The Carter Center leads the international Guinea Worm Eradication Program and works in close partnership with national programs, the World Health Organization (WHO), U.S. Centers for Disease Control and Prevention (CDC), UNICEF, and many other partners. The Carter Center provides technical and financial assistance to national Guinea worm eradication programs to help interrupt transmission of the disease. When transmission is interrupted, the Center provides continued assistance in strengthening surveillance in Guinea worm-free areas for three years and helps prepare nations for official evaluation by the International Commission for the Certification of Dracunculiasis Eradication (ICCDE) and certification by the WHO. CDC provides technical assistance and verifies that worms from these final patients truly are Guinea worms. The presence of Guinea worm disease in an area usually indicates abject poverty, including the absence of safe drinking water; UNICEF mainly assists countries by helping governments provide safe sources of drinking water to priority areas identified by the national Guinea Worm Eradication Programs. The WHO is responsible for certifying countries as Guinea worm-free and is the only organization that can officially certify the elimination or eradication of any disease.

 

For a disease to be eradicated, every country must be certified, even if transmission has never taken place there. Only eight countries remain to be certified as having eliminated Guinea worm disease.

 

Partnerships
In 1986, Guinea worm disease afflicted an estimated 3.5 million people a year in 21 countries in Africa and Asia. Today, thanks to the work of strong partnerships, including the countries themselves, the incidence of Guinea worm has been reduced by more than 99.999 percent.

Many generous foundations, corporations, governments, and individuals have made the Carter Center's work to eradicate Guinea worm disease possible, including major support from the Bill & Melinda Gates Foundation; the United Kingdom's Department for International Development (DFID); Children's Investment Fund Foundation (CIFF) - United Kingdom; the Conrad N. Hilton Foundation; and The Federal Republic of Germany. Major support from the United Arab Emirates began with Sheikh Zayed Sultan Al Nahyan and has continued under Sheikh Khalifa and HH Crown Prince Mohammed bin Zayed. The DuPont Corporation and Precision Fabrics Group donated nylon filter cloth early in the campaign; Vestergaard's LifeStraw® donated pipe and household cloth filters in recent years. Abate® larvicide (temephos) has been donated for many years by BASF. Key implementing partners include the ministries of health in endemic countries, The Carter Center, WHO, CDC, and UNICEF.

 

About Guinea worm disease
Considered a neglected tropical disease, Guinea worm disease (dracunculiasis) is contracted when people consume water contaminated with tiny crustaceans that carry Guinea worm larvae. The larvae mature and mate inside the patient’s body. The male worm dies. After a year, a meter-long female worm emerges slowly through a painful blister in the skin. Contact with water stimulates the emerging worm to release its larvae into the water and start the process all over again. Guinea worm disease incapacitates people for weeks or months, reducing individuals’ ability to care for themselves, work, grow food for their families, or attend school.

 

Without a vaccine or medicine, the ancient parasitic disease is being wiped out mainly through community-based interventions to educate and change behavior, such as teaching people to filter all drinking water and preventing contamination by keeping patients from entering water sources.

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