Dynamics of a Model of Coronavirus Disease with Fear Effect, Treatment Function, and Variable Recovery Rate

In this work, we developed, validated, and analysed the behaviour of a compartmental model of COVID-19 transmission in Saudi Arabia. The population was structured into four classes: susceptible (S), exposed (E), infectious (I), and removed (R) individuals. This SEIR model assumes a bilinear incidenc...

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Published inMathematics (Basel) Vol. 12; no. 11; p. 1678
Main Authors Alqahtani, Rubayyi T., Ajbar, Abdelhamid, Alharthi, Nadiyah Hussain
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.06.2024
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ISSN2227-7390
2227-7390
DOI10.3390/math12111678

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Abstract In this work, we developed, validated, and analysed the behaviour of a compartmental model of COVID-19 transmission in Saudi Arabia. The population was structured into four classes: susceptible (S), exposed (E), infectious (I), and removed (R) individuals. This SEIR model assumes a bilinear incidence rate and a nonlinear recovery rate that depends on the quality of health services. The model also considers a treatment function and incorporates the effect of fear due to the disease. We derived the expression of the basic reproduction number and the equilibrium points of the model and demonstrated that when the reproduction number is less than one, the disease-free equilibrium is stable, and the model predicts a backward bifurcation. We further found that when the reproduction number is larger than one, the model predicts stable periodic behaviour. Finally, we used numerical simulations with parameter values fitted to Saudi Arabia to analyse the effects of the model parameters on the model-predicted dynamic behaviours.
AbstractList In this work, we developed, validated, and analysed the behaviour of a compartmental model of COVID-19 transmission in Saudi Arabia. The population was structured into four classes: susceptible (S), exposed (E), infectious (I), and removed (R) individuals. This SEIR model assumes a bilinear incidence rate and a nonlinear recovery rate that depends on the quality of health services. The model also considers a treatment function and incorporates the effect of fear due to the disease. We derived the expression of the basic reproduction number and the equilibrium points of the model and demonstrated that when the reproduction number is less than one, the disease-free equilibrium is stable, and the model predicts a backward bifurcation. We further found that when the reproduction number is larger than one, the model predicts stable periodic behaviour. Finally, we used numerical simulations with parameter values fitted to Saudi Arabia to analyse the effects of the model parameters on the model-predicted dynamic behaviours.
Audience Academic
Author Alharthi, Nadiyah Hussain
Alqahtani, Rubayyi T.
Ajbar, Abdelhamid
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Snippet In this work, we developed, validated, and analysed the behaviour of a compartmental model of COVID-19 transmission in Saudi Arabia. The population was...
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StartPage 1678
SubjectTerms backward bifurcation
Bifurcations
Coronaviruses
COVID-19
Disease transmission
Fear
fear effect
Health services
Hopf bifurcation
Hospitals
Infectious diseases
Mathematical models
Medical personnel
Pandemics
Parameters
Per capita
Recovery
Recruitment
SEIR model
variable recovery rate
Viral diseases
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Title Dynamics of a Model of Coronavirus Disease with Fear Effect, Treatment Function, and Variable Recovery Rate
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