As the Northern Hemisphere enters winter again, there has been a second outbreak of the worldwide epidemic. Consequently, due to the strong transmission ability of the SARS-CoV-2 virus, no region correctly estimated the epidemic, and the relaxed emergency response raised the epidemic risks in the context of the outbreak.Ĭoronavirus disease 2019 (COVID-19) has continued to spread throughout most countries and regions since the World Health Organization (WHO) declared it a pandemic on 11 March (Cucinotta & Vanelli, 2020 Wu et al., 2020). Although low population flow to provinces far from Hubei delayed the outbreak in those provinces, relatively delayed emergency response increased the epidemic in the control period. Meanwhile, quick emergency responses mitigated the spread. In the outbreak period, a large population flow out of Wuhan led to nationwide migration mobility, which directly increased the epidemic in each province. We found that the population flow out of Wuhan had a long-term impact on the epidemic's spread. We examined and compared the impact of emergency response measures and population flow on China's epidemic risk after the Wuhan lockdown during the outbreak period and a control period. Because of the spatial heterogeneity, the different impacts of coupled emergency responses and population flow on the COVID-19 epidemic during the outbreak period and a control period are unclear. The local epidemic risk of COVID-19 is a combination of emergency response measures and population flow. Like the human-to-human transmission of the severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2), the distribution of COVID-19 was driven by population flow and required emergency response measures to slow down its spread and degrade the epidemic risk. Coronavirus disease 2019 (COVID-19) has spread around the world and requires effective control measures.
0 kommentar(er)
