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Introduction: In less than two months, the COVID-19 outbreak in China was controlled through the stringent strategies of screening and isolation This article aims to use empirical data from all cases from a prefecture-level city of China to introduce and examine the feasibility and efficiency of the screening and isolation strategies and how these were essential in combatting the COVID-19 outbreak Methods: For this retrospective study, all confirmed COVID-19 patients were recruited from the Taizhou prefecture-level city of Zhejiang province, China Results: Of the city’s total population, 24% were screened for COVID-19 and isolated at home or designated locations for two weeks From these, a total of 146 confirmed cases of COVID-19 were analysed Of all cases, 51% were traced from Wuhan, and 21% of patients were in close contact with confirmed cases from outside of the city Initially, 13% of all patients reported having no clear symptoms, while 42% of patients presented with fever and/ or other symptoms Compared with local patients, new arrivals to the city had fewer days between their exposure and the development of symptoms of COVID-19 (P<0 001), and fewer days from the time they developed symptoms to the confirmation of COVID-19 (P<0 001), respectively Conclusion: This study has fully confirmed that controlling the COVID-19 outbreak through screening and isolation is effective, efficient, and essential The evidence-based framework and implementation of China’s strategy to combat COVID-19 can explain how China contained the COVID-19 outbreak in a short time period This study offers important references and implications for containing the COVID-19 pandemic in the global community
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