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. 2020 May 17;96:506–508. doi: 10.1016/j.ijid.2020.05.046

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© 2020 The Author(s)

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.

PMC Copyright notice

Voronoi Treemaps showing (A) Countries/regions from which Canada’s earliest 118 documented COVID-19 patients returned versus (B) Global analysis of countries from which COVID-19 cases arose; both represent cases arising prior to March 11, 2020. ISO alpha-2 codes were used to ease the show of country/region names (i.e., AT: Austria, AU: Australia, BE: Belgium, CA: Canada, CH: Switzerland, CN: China, DE: Germany, EG: Egypt, ES: Spain, FR: France, GB: the United Kingdom of Great Britain and North Ireland, HK: Hong Kong, IN: India, IR: Iran, IT: Italy, JP: Japan, KR: the Republic of Korea, MX: Mexico, MY: Malaysia, NL: the Netherlands, NO: Norway, PH: the Philippines, QA: Qatar, SE: Sweden, SG: Singapore, TW: Taiwan, and US: the United States).