The global impact of corona virus (COVID-19) has been profound, and the public health
threat it represents is the most serious seen in a respiratory virus since the 1918 influenza A …

Nowadays, COVID-19 has put a significant responsibility on all of us around the world from
its detection to its remediation. The globe suffer from lockdown due to COVID-19 pandemic …

This article focuses on the recent epidemic caused by COVID-19 and takes into account
several measures that have been taken by governments, including complete closure, media …

In this paper, we provide an epidemic SIR model with long-range temporal memory. The
model is governed by delay differential equations with fractional-order. We assume that the …

A fractional MSEIR model is presented, involving the Caputo fractional derivative. The
equilibrium points and the basic reproduction number are computed. An analysis of the local …

In this paper, we propose a nonlinear fractional order model in order to explain and
understand the outbreaks of influenza A (H1N1). In the fractional model, the next state …

The dynamics of COVID-19 (Coronavirus Disease-2019) transmission are described using a
fractional order SIQR model. The stability analysis of the model is performed. To obtain semi …

In this paper we construct nonstandard finite difference (NSFD) schemes to obtain numerical
solutions of the susceptible–infected (SI) and susceptible–infected–recovered (SIR) …

Individual's perception of the participant in a vaccine program reflects their intrinsic
appreciation of the trade-off between vaccine behavior, risk of infection, and memory effect …

Novel coronavirus named SARS-CoV-2 is one of the global threads and uncertain
challenges worldwide faced at present. It has stroke rapidly around the globe due to viral …