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. 2020 Jul 3;8:325. doi: 10.3389/fpubh.2020.00325

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Copyright © 2020 Wang, Xie, Wang and Zeng.

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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Observed and predicted daily new cases and 95% confidence interval (shaded). (A) China. Training data: January 20 to February 4; testing data: February 5 to May 10. 14,108 cases were reported on February 12 and not shown on figure. The recent cases since April are imported cases. (B) South Korea. Training data: February 15 to March 4; testing data: March 5 to May 10. (C) Italy. First dashed line indicates the nation-wide lockdown (March 11). Second and third dashed line indicates 2 or 4 weeks after. Training data: February 20 to April 29 (7 weeks after the lockdown); testing data: April 30 to May 10.