83 new cases of local asymptomatic infections: 2 cases of point-to-point closed-loop transfer personnel returning to Sichuan from other provinces, 11 cases in Chengdu, 26 cases in Yibin, 25 cases in Neijiang, 4 cases in Dazhou, 4 cases in Nanchong, 3 cases in Guang'an, 3 cases in Aba, Suining 2 cases, 1 case in Luzhou, 1 case in Mianyang, and 1 case in Guangyuan. 2 new confirmed cases imported from abroad (in Chengdu, 1 of which was converted from a previously asymptomatic infection to a confirmed case).
City lockdowns hinder Chinese students study abroad plans universityworldnews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from universityworldnews.com Daily Mail and Mail on Sunday newspapers.
Authorities in Chengdu, capital of Sichuan province, apologized on Saturday for the failure of the city's new nucleic acid testing system on Friday, while resulted in long testing lines on a rainy night.
Shenzhen s epidemic prevention and control has achieved phased results, and the fluctuation of the North Sea epidemic has declined tellerreport.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from tellerreport.com Daily Mail and Mail on Sunday newspapers.
The COVID-19 epidemic poses a significant challenge to the operation of society and the resumption of work and production. How to quickly track the resident location and activity trajectory of the population, and identify the spread risk of COVID-19 in geospatial space has important theoretical and practical significance for controlling the spread of the virus on a large scale. In this study we take the geographical community as the research object, and use the mobile phone trajectory data to construct the spatiotemporal profile of the potential high-risk population. First, by using the spatiotemporal data collision method, identify and recover the trajectories of the people who were in the same area with the confirmed patients during the same time. Then, based on the range of activities of both cohorts (the confirmed cases and the potentially infected groups), we analyze the risk level of the relevant places and evaluate the scale of potential spread. Finally, we calculate the probabi