Evaluating the Effectiveness of COVID-19 Prevention and Control Measures Based on SEIR Model

Abstract

The outbreak of COVID-19 has become a public health emergency of international concern as global confirmed cases continue to grow. Harsh policies have been taken in both cities and rural areas. This article uses a modified SEIR model, counting asymptomatic infectious people and combined data from health authorities and simulation to analyze the efficacy of prevention and control measures. This paper also calculates the basic reproduction number of COVID-19. The uncertainty caused by asymptomatic infectious people is testified in this study. Under tense prevention and control measures, the epidemic of COVID-19 will be resolved soon in spite of the presence of asymptomatic infectious people.