Dog screening as a novel complementary guinea worm disease control tool to mitigate persistence in Chad: A modeling study.

A free-roaming dog population remains one of the major public health problems in many developing countries. In this study, we investigated the potential impact of owned roaming and stray dogs on the persistence and possible eradication of Guinea worm disease (GWD) in Chad. We developed and analysed a multi-host of Guinea worm; and considered dogs as the definitive hosts, and fish as the intermediate hosts.

Dynamics of a Fractional-Order Chikungunya Model with Asymptomatic Infectious Class.

In this paper, a nonlinear fractional-order chikungunya disease model that incorporates asymptomatic infectious individuals is proposed and analyzed. The main interest of this work is to investigate the role of memory effects on the dynamics of chikungunya. Qualitative analysis of the model's equilibria showed that there exists a threshold quantity which governs persistence and extinction of the disease.

Dynamical and optimal control analysis of a seasonal model.

The effects of seasonal variations on the epidemiology of disease is well documented. In particular, seasonal variations alter vector development rates and behaviour, thereby influencing the transmission dynamics of the disease. In this paper, a mathematical model for disease that incorporates seasonal effects is presented.