BACKGROUND: In 2024, the global new crown epidemic is still not optimistic and the overall situation remains complex and challenging. A detailed and comprehensive analysis of the epidemiological characteristics and transmission dynamics of the COVID-19 epidemic over the past four years is urgently needed. METHODS: ) and outbreak trends. RESULTS: values decreased sequentially, with the outbreaks completely dying out after six, 47 and 153 days, respectively. Sensitivity analyses showed that decreasing the transmission rate and increasing the quarantine rate were essential for controlling the spread of the virus. CONCLUSIONS: The extended SEIR models played an important role in capturing the transmission pattern of multi-stage and multi-wave epidemics. Future interventions should be targeted align with the epidemiological characteristics and transmission dynamics of the outbreak.
Ma et al. (Thu,) studied this question.
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