Global analysis of a new reaction-diffusion multi-group SVEIR propagation model with time delay

In this work, the global dynamic behavior of a new reaction-diffusion multi-group SVEIR (Susceptible-Vaccinated Exposed-Infectious-Recovered) rumor propagation model is studied. Compared with the traditional SVIR and SEIR models, the new model takes into account the latent of rumors, that is, believing rumors does not mean spreading rumors, and the impact of official rumor refutation on rumor propagation, which will lead to positive changes in the results of rumor propagation. The expression of basic reproduction number R-0 obtained through the next generation matrix method. By constructing Lyapunov function and applying graph-theoretic approach, we have obtained that the rumor eliminating equilibrium point E-0 is globally asymptotically stable when R-0 <= 1, and the rumor spreading equilibrium point E* is globally asymptotically stable when R-0 > 1. The conclusion is verified by numerical simulation. In addition, the effects of time delay and the total number of plates are also given by numerical simulation.

Automated summary

This study investigates the global dynamic behavior of a new reaction-diffusion multi-group SVEIR (Susceptible-Vaccinated Exposed-Infectious-Recovered) rumor propagation model. The model considers the latency of rumors, where believing rumors does not necessarily mean spreading rumors, and the impact of official rumor refutation on rumor propagation, resulting in positive changes in the results of rumor propagation. The basic reproduction number R-0 is obtained using the next generation matrix method. By constructing a Lyapunov function and applying a graph-theoretic approach, it is found that the rumor eliminating equilibrium point E-0 is globally asymptotically stable when R-0 <= 1, while the rumor spreading equilibrium point E* is globally asymptotically stable when R-0 > 1. This conclusion is verified through numerical simulation, which also provides insights into the effects of time delay and the total number of plates.