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Risk mapping for Taenia solium: Applying multicriteria decision analysis in Lao PDR.

Andrew Larkins1,2, Mieghan Bruce2,3, Rattanxay Phetsouvanh4

  • 1School of Medical, Molecular and Forensic Sciences, Murdoch University, Perth, Australia.

Tropical Medicine & International Health : TM & IH
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Summary

Taenia solium (T. solium) risk mapping in Lao PDR identified high-risk areas using multicriteria decision analysis. This approach aids disease control in endemic nations by pinpointing areas needing targeted interventions for this significant foodborne parasite.

Keywords:
Lao PDRNeurocysticercosisTaenia soliumneglected topical diseaseszoonoses

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Area of Science:

  • Parasitology
  • Epidemiology
  • Geographic Information Systems (GIS)

Background:

  • Taenia solium is a major global foodborne parasite and a leading cause of epilepsy in low- and middle-income countries.
  • Diagnostic challenges hinder Taenia solium control efforts.
  • The World Health Organization (WHO) recommends risk mapping tools for endemic countries.

Purpose of the Study:

  • To apply multicriteria decision analysis (MCDA) for mapping Taenia solium risk in Lao PDR.
  • To serve as a case study for risk mapping in other Taenia solium-endemic regions.

Main Methods:

  • Multicriteria decision analysis (MCDA) was employed using census data on Taenia solium risk factors in Lao PDR.
  • An analytical hierarchy process (AHP) was used for factor weighting.
  • Village and district risk scores were calculated and categorized using weighted linear combination and Fisher-Jenks algorithm.

Main Results:

  • Over 2000 villages (23.7%) were classified as high-risk for Taenia solium.
  • 21 districts (14.2%) were identified as high-risk.
  • Risk maps highlighted high-risk areas in Phongsaly, Salavan, and Xekong provinces, with two areas showing high risk and low variation.

Conclusions:

  • Multicriteria decision analysis (MCDA) offers a simple, rapid, and flexible method for Taenia solium risk mapping.
  • The MCDA approach is adaptable for use in any endemic country with suitable risk factor data.