An Efficient GUI-Based Multistep Block Method for SEIR Pandemic Spread Simulation

Abstract

This study presents a novel GUI to simulate the SEIR (Susceptible-Exposed-Infectious-Recovered) pandemic model using a multistep block method that offers computational improvements while maintaining accuracy comparable to traditional methods, such as the fourth-order Runge-Kutta (RK4) method. This approach reduces computational time through its block strategy, which approximates two solutions simultaneously. Additionally, the multistep approach reduces the number of function evaluations compared to RK4, further enhancing its computational efficiency. The integration of a predictor-corrector scheme enhances the accuracy of the approximate solutions. In conclusion, due to its time efficiency and comparable accuracy to previous methods, this new GUI model has immediate applicability in real-time pandemic modelling, providing public health agencies and researchers with a faster, yet equally precise, tool for disease forecasting and outbreak control.