Influence of seasonality on <i>Zika virus</i> transmission

Abstract

<abstract><p>In order to study the impact of seasonality on <italic>Zika virus</italic> dynamics, we analyzed a non-autonomous mathematical model for the <italic>Zika virus</italic> (<italic>ZIKV</italic>) transmission where we considered time-dependent parameters. We proved that the system admitted a unique bounded positive solution and a global attractor set. The basic reproduction number, $ \mathcal{R}_0 $, was defined using the next generation matrix method for the case of fixed environment and as the spectral radius of a linear integral operator for the case of seasonal environment. We proved that if $ \mathcal{R}_0 $ was smaller than the unity, then a disease-free periodic solution was globally asymptotically stable, while if $ \mathcal{R}_0 $ was greater than the unity, then the disease persisted. We validated the theoretical findings using several numerical examples.</p></abstract>