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. 2020 May 22;10:284. doi: 10.3389/fcimb.2020.00284

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Copyright © 2020 Liu, Lei, Xiao, Yang, Li, Ji, Du, Tan, Zhu, Li, Jin, Liu, Wu and Liu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Analysis of the population migration and trend of illness onset. (A) Geographical display of the distance of Shiyan from Wuhan. The migrant population is calculated using the percent of total migrated individuals. (B) The onset numbers of confirmed COVID-19 patients in Hubei province and Shiyan city. Deaths occurred up to February 11, 2020 in Hubei province were also counted.