We construct a new mathematical model to better understand the novel coronavirus
(omicron variant). We briefly present the modeling of COVID-19 with the omicron variant and …

This study proposes a new fractional mathematical model to study the impact of vaccination
on COVID-19 outbreaks by categorizing infected people into non-vaccinated, first dose …

In this paper, we consider a modified SIR (susceptible-infected-recovered/removed) model
that describes the evolution in time of the infectious disease caused by Sars-Cov-2 (Severe …

Two-strain time-delayed epidemic model with general incidence rates is suggested and
studied in this paper. The model consists of four compartments that describe the interaction …

In this paper, a fractional-order generalization of the susceptible-infected-recovered (SIR)
epidemic model for predicting the spread of an infectious disease is presented. Also, an …

This study is concerned with applying fractional calculus in modelling tuberculosis (TB)
transmission dynamics. A new six-dimensional fractional-order mathematical model in the …

The newly arose irresistible sickness known as the Covid illness (COVID-19), is a highly
infectious viral disease. This disease caused millions of tainted cases internationally and still …

Fractional differential equations are being used to define numerous physical phenomena
instead of conventional ordinary or partial differential equations. The secret is to get more …

The mathematical epidemic SIR (Susceptible–Infected–Recovered) model is targeted to
obtain full elementary solutions under restrictive assumptions in this paper. To achieve the …

SARS-CoV-2 is the newly emerged infectious disease that started in Wuhan, China, in early
December 2019 and has spread the world over very quickly, causing severe infections and …