Vector borne diseases on an urban environment: the effects of heterogeneity and human circulation

Abderrahman Iggidr 1, 2 Jair Koiller 3, 4 Maria Lucia Penna 5 Gauthier Sallet 1 Moacyr Alvim Silva 6 Max Souza 7
1 IECL - Institut Élie Cartan de Lorraine
2 NEUROSYS - Analysis and modeling of neural systems by a system neuroscience approach
Inria Nancy - Grand Est, LORIA - AIS - Department of Complex Systems, Artificial Intelligence & Robotics
3 Instituto Nacional de Metrologia, Qualidade e Tecnologia (INMETRO)
4 Instituto Politecnico, Universidade do Estado do Rio de Janeiro
5 ISC - Instituto de Saúde Coletiva [Rio de Janeiro]
6 Escola de Matemática Aplicada, FGV
7 IME-UFF - Instituto de Matemática e Estatística [Rio de Janeiro]
Abstract : We study the effect of human circulation and host/vector heterogeneities on the onset of epidemics of arboviruses. From a meta-population dynamics based on the classical Bailey-Dietz model, we derive a multi-group model under three assumptions: (i) fast host sojourn timescale ; (ii) mosquitoes do not move; (iii) time homogeneity and strong connectivity of human circulation. Within this modelling framework, three different kinds of $R_0$ appear: (i) the " true " or " global " $R_0$ —derived from the corresponding next generation matrix; (ii) the uniform $R_0$—obtained if the patches are taken homogeneous; (iii) the local $R_0$s—obtained if the patches are disconnected. We show that there is relevant epidemiological information associated to all of them. In particular, they can be used to understand the effects of changing the circulation on the value of the global $R_0$. We also present additional results on the effects on $R_0$ of different vector control policies, and a simulation with data from the city of Rio de Janeiro, Brazil.
Keywords : urban epidemics meta-population models basic reproductive number multi-scaling reduction arboviruses *
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Journal articles
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Submitted on : Sunday, December 25, 2016 - 7:43:20 PM
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Abderrahman Iggidr, Jair Koiller, Maria Lucia Penna, Gauthier Sallet, Moacyr Alvim Silva, et al.. Vector borne diseases on an urban environment: the effects of heterogeneity and human circulation. Ecological Complexity, Elsevier, 2017, 30, pp.76--90. ⟨10.1016/j.ecocom.2016.12.006⟩. ⟨hal-01422432⟩

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