An epidemiological model for mosquito host selection and temperature-dependent transmission of West Nile virus

Author:

Fasano Augusto,Riccetti Nicola,Angelou Anastasia,Gomez-Ramirez Jaime,Ferraccioli Federico,Kioutsioukis Ioannis,Stilianakis Nikolaos I.

Abstract

AbstractWe extend a previously developed epidemiological model for West Nile virus (WNV) infection in humans in Greece, employing laboratory-confirmed WNV cases and mosquito-specific characteristics of transmission, such as host selection and temperature-dependent transmission of the virus. Host selection was defined by bird host selection and human host selection, the latter accounting only for the fraction of humans that develop symptoms after the virus is acquired. To model the role of temperature on virus transmission, we considered five temperature intervals (≤ 19.25 °C; > 19.25 and < 21.75 °C; ≥ 21.75 and < 24.25 °C; ≥ 24.25 and < 26.75 °C; and > 26.75 °C). The capacity of the new model to fit human cases and the week of first case occurrence was compared with the original model and showed improved performance. The model was also used to infer further quantities of interest, such as the force of infection for different temperatures as well as mosquito and bird abundances. Our results indicate that the inclusion of mosquito-specific characteristics in epidemiological models of mosquito-borne diseases leads to improved modelling capacity.

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

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