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

Andrew Larkins; Mieghan Bruce; Rattanaxay Phetsouvanh; Amanda Ash

doi:10.1111/tmi.13917

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

Journal article

Open access

Peer reviewed

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

Andrew Larkins, Mieghan Bruce, Rattanaxay Phetsouvanh and Amanda Ash

Tropical Medicine & International Health, Vol.28(9), pp.736-741

2023

DOI: https://doi.org/10.1111/tmi.13917

PMID: 37474449

Appears in Open Access via Read & Publish Agreements

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Abstract

Lao PDR

neglected topical diseases

Neurocysticercosis

Taenia solium

zoonoses

Objectives Taenia solium is ranked the most significant global foodborne parasite and the leading cause of epilepsy in low and middle-income countries. Diagnostic challenges have hampered disease control efforts to date and WHO has called for the development of risk mapping tools to assist endemic countries. This study describes the application of multicriteria decision analysis to map the risk of T. solium in Lao PDR and acts as a case study for other endemic countries. Methods Multicriteria decision analysis was completed using census data on relevant risk factors in Lao PDR. Factors were weighted using an analytical hierarchy process. Village risk scores were calculated using a weighted linear combination and categorised using the Fisher-Jenks algorithm into low, medium, and high risk. District risk scores and categories were calculated using the mean village risk score for a district. Sensitivity analysis was completed by doubling and halving risk factor weights, one at a time, and assessing the standard deviation of scores and categories across all scenarios. Results A total of 2017 (23.7%) villages were classified as high risk, with 3312 (39.0%) medium and 3170 (37.3%) low risk. This resulted in 21 (14.2%) high-risk districts, 83 (56.1%) medium and 44 (29.7%) low-risk districts. The risk maps highlight two areas of interest which are high risk and low variation. The first is the northern province of Phongsaly, which is consistent with literature and anecdotal reports. The second is the southern Salavan and Xekong provinces, which have yet to be investigated in detail. Conclusions Multicriteria decision analysis has provided a simple, rapid, and flexible approach to mapping the risk of T. solium in Lao PDR. The nature of the method means that it can be completed in any endemic country with available and appropriate risk factor data.

Details

Title: Risk mapping for Taenia solium: Applying multicriteria decision analysis in Lao PDR
Authors/Creators: Andrew Larkins - Murdoch University
Mieghan Bruce - Murdoch University, Centre for Biosecurity and One Health
Rattanaxay Phetsouvanh - Ministry of Health
Amanda Ash - Murdoch University, Centre for Biosecurity and One Health
Publication Details: Tropical Medicine & International Health, Vol.28(9), pp.736-741
Publisher: John Wiley & Sons Ltd.
Identifiers: 991005593751707891
Murdoch Affiliation: Centre for Biosecurity and One Health; School of Medical, Molecular and Forensic Sciences; School of Veterinary Medicine
Language: English
Resource Type: Journal article

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Collaboration types: International collaboration
Citation topics: 1 Clinical & Life Sciences; 1.163 Parasitology - General; 1.163.1106 Echinococcosis
Web Of Science research areas: Public, Environmental & Occupational Health; Tropical Medicine
ESI research areas: Social Sciences, general