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view all  View all projects RESEARCH PROJECT

Hydrology-Informed Metapopulation Modeling of Liver Fluke Transmission in the Lawa Lake Complex of Northeast Thailand

Principal Investigator

Co-Researcher

   
Tomas Leon
Tomas Leon, PhD Candidate
Position:

PhD Candidate, University of California, Berkeley

Research interests:
  • Development engineering
  • Disease ecology
  • Disease transmission modeling
  • Parasitology
Contact:
tomas.leonfoo@berkeley.edu
Dr. Vichian Plermkamon
Dr. Vichian Plermkamon, PhD
Position:

Assistant Professor, Khon Kaen University

Research interests:
  • Hydrological modeling
  • Flooding management
  • Agricultural engineering
Contact:
vicplefoo@kku.ac.th
   

Timeline

January 2016 - TBD


ABSTRACT

Transmission of the Southeast Asian liver fluke Opisthorchis viverrini involves several water-mediated steps for the intermediate host snails and fish and the egg and cercaria stages of parasite development. We introduce a modeling framework that incorporates hydrology model outputs from PCSWMM as time-varying input parameters in a metapopulation disease transmission model connecting several villages in the Lawa Lake system in northeast Thailand. We use data from the Lawa Project and run simulations from 2008-2016 of O. viverrini prevalence in human, reservoir host, snail, and fish populations in six village clusters around Lawa Lake. We present and describe reinfection data from human populations during this control program and leverage it to interpret data and model results. Based on these findings, we propose three disease prevalence curve patterns based on hydrologic characteristics of the surrounding environment and historical control program intensiveness to describe this system. The use of this linked hydrologic-epidemiologic modeling framework can be adapted for use to the environments, transmission processes, and seasonality of other infectious diseases affected by water movement.

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