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Global Guinea worm disease (Dracunculiasis) eradication efforts have eliminated the disease from 17 countries. Remaining challenges include insecurity and animal infections in Chad, Ethiopia, Mali, and South Sudan.

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Area of Science:

  • Global Health
  • Infectious Disease Epidemiology
  • Parasitology

Background:

  • Dracunculiasis, or Guinea worm disease, was once endemic in 21 countries, with 3.5 million cases in 1986.
  • Significant progress has been made in the global Dracunculiasis Eradication Program.
  • The program aims for complete interruption of Guinea worm transmission worldwide.

Purpose of the Study:

  • To provide an updated status report on the global Dracunculiasis Eradication Program as of the end of 2021.
  • To identify the remaining endemic countries and key challenges to eradication.
  • To highlight the importance of addressing animal reservoirs for disease elimination.

Main Methods:

  • The report is based on data and surveillance information collected through the global Dracunculiasis Eradication Program.
  • Analysis of case reporting from endemic countries.
  • Monitoring of animal infections with Dracunculus medinensis.

Main Results:

  • Dracunculiasis has been eradicated from 17 of the 21 historically endemic countries.
  • In 2021, human cases were reported only in Chad, Ethiopia, Mali, and South Sudan.
  • Indigenous infections in animals, primarily domestic dogs, were also reported in Chad, Ethiopia, and Mali.

Conclusions:

  • Insecurity and the presence of Guinea worm infections in animal reservoirs are the primary obstacles to complete dracunculiasis eradication.
  • Sustained efforts are required to address these challenges and achieve the final stages of the eradication program.
  • Interruption of transmission necessitates integrated strategies targeting both human and animal infections.