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Malaria stratification mapping in Thailand to support prevention of reestablishment
Bisanzio, D., Sudathip, P., Kitchakarn, S., Kanjanasuwan, J., Gopinath, D., Pinyajeerapat, N., Sintasath, D., & Shah, J. A. (2024). Malaria stratification mapping in Thailand to support prevention of reestablishment. American Journal of Tropical Medicine and Hygiene, 110(1), 79-82. https://doi.org/10.4269/ajtmh.23-0595
Thailand aims to eliminate malaria by 2026, with 46 of the country's 77 provinces already verified as malaria free. However, these provinces remain susceptible to the reestablishment of indigenous transmission that would threaten the national goal. Thus, the country is prioritizing national and subnational prevention of reestablishment (POR) planning while considering the spatial heterogeneity of the remaining malaria caseload. To support POR efforts, a novel nonmodeling method produced a malaria stratification map at the tambon (subdistrict) level, incorporating malaria case data, demographic data, and environmental factors. The stratification analysis categorized 7,425 tambons into the following four risk strata: Local Transmission (2.9%), At Risk for Transmission (3.1%), High Risk for Reintroduction (2.9%), and Low Risk for Reintroduction (91.1%). The stratification map will support the national program to target malaria interventions in remaining hotspots and mitigate the risk of transmission in malaria-free areas.
