A provisional total of 53 cases of Guinea worm disease were reported in 2019, Áù¾ÅÉ«Ìà announced Wednesday. Intensified surveillance and reporting incentives in endemic areas in recent years have produced expected fluctuations in the small number of Guinea worm cases. When Áù¾ÅÉ«Ìà assumed leadership of the program in 1986, about 3.5 million human cases occurred annually in 21 countries in Africa and Asia.
Considered a neglected tropical disease, Guinea worm disease is usually contracted when people consume water contaminated with tiny crustaceans (copepods) that carry Guinea worm larvae. The larvae mature and mate inside the patient’s body. The male worm dies. After about 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 people and change their behavior, such as teaching them to filter all drinking water and preventing contamination by keeping patients from entering water sources.
The campaign against the disease, also called dracunculiasis, has taken on additional complexity in recent years with the rise of infections in animals, primarily dogs in Chad. The world’s foremost experts and partner governments are responding vigorously.
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Eradication: Reduction of the worldwide incidence of a disease to zero so no further control measures are needed.
Elimination: Transmission of a disease is halted in a single country, continent, or other limited geographic area, rather than global eradication.
Control: Reduced incidence or prevalence of a disease or condition; control measures are still required.