Spatiotemporal characteristics and prevention and control measures of SARS-CoV-2 Omicron pandemic in Shanghai
Journal Title: Shanghai Journal of Preventive Medicine - Year 2023, Vol 35, Issue 1
Abstract
ObjectiveTo analyze the spatiotemporal characteristics and prevention and control measures of the pandemic caused by the SARS-CoV-2 Omicron variant in Shanghai in 2022ï¼ aiming to optimize future prevention and control strategies.MethodsDescriptive statistical method was used to analyze data on daily infections released by the Shanghai Municipal Health Commission from March 1 to June 30ï¼ 2022.ResultsAs of 30 Juneï¼ a total of 627 110 infections and 588 deaths had been reported in Shanghai. Most of the cases were in Pudong New Area ï¼35.47%ï¼ï¼ Minhang District ï¼10.18%ï¼ and Huangpu District ï¼9.27%ï¼. The cumulative infection rate was 8.78% in Huangpu Districtï¼ which was the highest among all the districts. With the progress of the pandemicï¼ the prevention and control measures were strengthened from a âprecise prevention and controlâ strategy to âblock and gridâ screeningï¼ and then upgraded to city-wide lockdown. All daily new infections were identified from the quarantined population on April 29ï¼ 2022ï¼ reaching the goal of âclearance of community transmissionâ.ConclusionThe cumulative infections in Shanghai exceeded any previous epidemics in mainland China. Given the enhanced transmissibility and vaccine-induced immune escape of the Omicron variantï¼ timely and strong public health measures are needed to suppress the pandemic under the general policy of "Dynamic zero-COVID".
Authors and Affiliations
HE Yuanchen,CHEN Yinzi,SUN Chuanrui,CHEN Xiaowei,WANG Xiling,
Keywords
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