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The Effects of Rural/Urban Movement on Dengue Transmission Dynamics

Five serotypes of Dengue (DENV1-DENV5), a vector-borne disease transmitted by two species of mosquitoes, Aedes aegypti and Aedes albopictus, are prevalent in various tropical and subtropical regions of the world, posing a serious health threat to humans. Dengue is no longer restricted to tropical regions due to increasing levels of mobility via travel, migration, or displacement due to conflict. We use a system of nonlinear ordinary differential equations to explore the effects of rural/urban movement on Dengue transmission dynamics. The model incorporates movement between rural and urban regions. The population of hosts is subdivided into susceptible, exposed, infectious, and recovered classes. Vectors, assumed to remain in a single region, are divided into rural (Ae. albopictus) and urban (Ae. aegypti) populations. The vector populations are subdivided into susceptible, exposed, and infectious classes. We compute the basic reproductive number (R0) for the system with and without movement and use this key dimensionless parameter to study the effects of rural/urban host movement on Dengue dynamics.

Article Number:
MTBI-11-01M

Year:
2014

Authors:
Alejandra Gaitan – Universidad de Colima
Jasmine Jackson – Norfolk State University
Olivia Justynski – Mount Holyoke College
Danielle Williams – East Stroudsburg University
I Made Eka Dwipayana – Arizona State University
Komi Messan – Arizona State University
Omayra Ortega – Arizona State University
Fabio Sanchez – Universidad de Costa Rica

the_effects_of_rural_urban_movement_on_dengue_transmission_dynamics.pdf