journal article·2026-06-01Open access

Stability for VSIR model with two susceptible groups

Fawzy A. Bukhari, F. M. Omar, Mufda J. A. Alrawashdeh, M. A. Sohaly

AIP Advances· Volume 16· Issue 6

Abstract

In the present study, we analyzed the most basic transmission susceptible–infectious–recovered model of two susceptible groups with vaccination for a directly transmitted infectious disease caused by coronavirus disease 2019. A reproduction number R0 is computed, and it is obtained from the two equilibrium points, E0 and E*. The disease-free equilibrium (E0) is locally asymptotically stable if R0 < 1 and globally stable if R0 ≤ 1; if R0 > 1, then the endemic equilibrium point (E*) is locally asymptotically stable, and it is globally stable if R0 > 1. Numerical simulation is introduced to support the results.
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Research context

OpenAlex topics: Mathematical and Theoretical Epidemiology and Ecology Models · COVID-19 epidemiological studies · SARS-CoV-2 and COVID-19 Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Statistics and Operations Research, College of Science, King Saud University 1 , Riyadh,

Mathematics Department, Faculty of Science, Mansoura University 2 , Mansoura,

Department of Statistics and Operations Research, College of Science, Qassim University 3 , P.O. Box 6644, Buraydah 51452,

Funding

Mansoura University

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