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. 2017 Sep 15;19:22–27. doi: 10.1016/j.tmaid.2017.09.003

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© 2017 The Authors

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 2 — Regression analysis of trend for imported infectious diseases, by months 2003–2012, South Korea. *Estimated trend equation were: salmonellosis, y_t = 1.615 + 0.018t (P = 0.007); shigellosis, y_t = 0.893 + 0.050t (P < 0.001); malaria, y_t = 5.604–0.109t + 0.001t² (F statistic = 14.699); and dengue, y_t = −0.079 + 0.085t (P < 0.001).