id author title date pages extension mime words sentences flesch summary cache txt cord-259126-5d4p8woi Pinotti, Francesco Tracing and analysis of 288 early SARS-CoV-2 infections outside China: A modeling study 2020-07-17 .txt text/plain 4541 255 51 BACKGROUND: In the early months of 2020, a novel coronavirus disease (COVID-19) spread rapidly from China across multiple countries worldwide. We collected data on COVID-19 cases outside China during the early phase of the pandemic and used them to predict trends in importations and quantify the proportion of undetected imported cases. Countries outside China promptly reinforced border controls and intensified active surveillance to rapidly detect and isolate importations, trace contacts, and isolate suspect cases [3, 4] . We modeled the total number of imported cases out of China over time accounting for date of travel, delay in reporting, and source areas. At that time, indeed, case definition for the importation of a COVID-19 suspect case was based exclusively on China as the origin of exposure or travel [54, 55] , with few exceptions including East Asian countries [56, 57] . ./cache/cord-259126-5d4p8woi.txt ./txt/cord-259126-5d4p8woi.txt