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Low parasite connectivity among three malaria hotspots in Thailand
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Journal Article
Low parasite connectivity among three malaria hotspots in Thailand
2021
Overview
Identifying sources and sinks of malaria transmission is critical for designing effective intervention strategies particularly as countries approach elimination. The number of malaria cases in Thailand decreased 90% between 2012 and 2020, yet elimination has remained a major public health challenge with persistent transmission foci and ongoing importation. There are three main hotspots of malaria transmission in Thailand: Ubon Ratchathani and Sisaket in the Northeast; Tak in the West; and Yala in the South. However, the degree to which these hotspots are connected via travel and importation has not been well characterized. Here, we develop a metapopulation model parameterized by mobile phone call detail record data to estimate parasite flow among these regions. We show that parasite connectivity among these regions was limited, and that each of these provinces independently drove the malaria transmission in nearby provinces. Overall, our results suggest that due to the low probability of domestic importation between the transmission hotspots, control and elimination strategies can be considered separately for each region.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ Cell Phone - statistics & numerical data
/ Human Migration - statistics & numerical data
/ Humanities and Social Sciences
/ Humans
/ Malaria
/ Malaria, Falciparum - epidemiology
/ Malaria, Falciparum - parasitology
/ Malaria, Falciparum - transmission
/ Plasmodium falciparum - isolation & purification
/ Science
/ Travel
