A class of COVID-19 models for the implementation of impulse interventions in susceptible populations was developed,and the basic regeneration number R0 and disease-free cycle solutions of the models were derived.The global stability of the disease-free periodic solution,when R0 is less than 1,is analyzed based on the pulse differential inequality and the Lyapunov function.Numerical simulations were given to present the effectiveness of the obtained results.Lastly,we analyzed the effect of pulse pre-vention strategy in the prevention of COVID-19 infectious disease.
维普
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