COVID-19 is a novel coronavirus affecting all the world since December last year. Up to
date, the spread of the outbreak continues to complicate our lives, and therefore, several …

Pandemic is an unprecedented public health situation, especially for human beings with
comorbidity. Vaccination and non-pharmaceutical interventions only remain extensive …

With the popularity of various social media, the propagation of rumors is becoming a social
threat. Here, the proposed mathematical model signifies the dynamics of rumor propagation …

In this article, we analyze the dynamics of the non-linear tumor-immune delayed (TID) model
illustrating the interaction among tumor cells and the immune system (cytotoxic T …

This study proposes a modified prey–predator-like model consisting of tumour cells, hunting
T-cells, and resting T-cells to illustrate tumour–immune interaction by incorporating discrete …

In this article, we develop and analyze a non-linear mathematical model of tumor-immune
interactions with combined therapeutic drug and treatment controls. To understand under …

An outbreak of the COVID-19 pandemic is a major public health disease as well as a
challenging task to people with comorbidity worldwide. According to a report, comorbidity …

The analysis of dynamical complexity in nonlinear phenomena is an effective tool to quantify
the level of their structural disorder. In particular, a mathematical model of tumor-immune …

Reaction–diffusion systems have a broad variety of applications, particularly in biology, and
it is well known that fractional calculus has been successfully used with this type of system …

Few existing studies establish the fact that although human pathogen exists in the
environmental reservoir, infectious disease outbreak is rare. In this article, we investigate the …