SIR model of COVID-19 with quarantine measure in Malaysia

In this study, the susceptible-infected-recovered (SIR) model of COVID-19 infectious disease is constructed. The basic SIR model is modified to incorporate the quarantine measure. The basic reproduction number denoted by RO is computed using the next-generation method. The analysis showed that the disease-free equilibrium point is locally asymptotically stable when RO < 1, and the infection eventually dies out. The numerical results revealed that quarantine measures significantly reduce the number of infected individuals. As the proportions of the quarantined individual increased, the number of infections subsided rapidly, suggesting that quarantine measure is one of the effective control strategies to combat the spread of COVID-19 viruses.