Risk of Malaria Reemergence in Southern France Te

Authors: Catherine Linard Nicolas Ponçon Didier Fontenille Eric F Lambin

Publish Date: 2009/05/16

Volume: 6, Issue: 1, Pages: 135-

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Abstract

The Camargue a region in southern France is considered a potential site for malaria reemergence All the suitable factors of the disease transmission system are present—competent mosquito vectors habitats for their breeding and susceptible people—except for the parasite The objective of this study was to test potential drivers of malaria reemergence in this system after possible changes in biological attributes of vectors agricultural practices land use tourism activities and climate Scenarios of plausible futures were formulated and then simulated using a spatially explicit and dynamic multiagent simulation the MALCAM model Scenarios were developed by varying the value of model inputs Model outputs were compared based on the contact rate between people and potential malaria vectors and the number of new infections in case of reintroduction of the parasite in the region Model simulations showed that the risk of malaria reemergence is low in the Camargue If the disease would reemerge it would be the result of a combination of unfavorable conditions introduction of a large population of infectious people or mosquitoes combined with high levels of people–vector contacts resulting from significant changes in land use tourism activities agricultural policies biological evolution of mosquitoes and climate changes The representation in the MALCAM model of interactions and feedbacks between different agents and between agents and their environment led in some cases to counterintuitive results Results from scenario analyses can help local public health authorities in policy formulationThis research was partially funded by EU grant GOCE2003010284 EDEN and the paper is catalogued by the EDEN Steering Committee as EDEN122 wwwedenfp6projectnet The French Ministry of Agriculture paid the salary of Nicolas Ponçon The contents of this publication are the responsibility of the authors and do not necessarily reflect the views of the European Commission The authors thank Annelise Tran CIRAD for providing the Landsat classification

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