Division of Clinical Epidemiology, McGill University Health Centre, Montreal, QC, Canada.
École de Santé Publique de l'Université de Montréal, University of Montreal, Montreal, QC, Canada; Centre de Recherche en Santé Publique de l'Université de Montréal, Montreal, QC, Canada.
Int J Infect Dis. 2020 Jul;96:506-508. doi: 10.1016/j.ijid.2020.05.046. Epub 2020 May 17.
The original coronavirus disease 2019 (COVID-19) outbreak in Wuhan, China has become a global pandemic. By tracking the earliest 118 COVID-19 cases in Canada, we produced a Voronoi treemap to show the travel origins of the country's earliest COVID-19 cases. By March 11, 2020, even though the majority (64.1%) of the world's COVID-19 confirmed cases still had their origin in China, only 7.6% of Canada's first 118 COVID-19 cases were related to travelers from China. The most commonly reported travel history among the 118 cases related to the Middle East, the United States, and Europe. Thus, in retrospect, broadening of early screening tools and travel restrictions to countries and regions outside China may have helped control global COVID-19 spread.
中国武汉的新冠肺炎疫情最初爆发，已成为全球大流行。通过追踪加拿大最早的 118 例新冠肺炎病例，我们制作了一个 Voronoi 树图，以显示该国最早的新冠肺炎病例的旅行来源。截至 2020 年 3 月 11 日，尽管世界上大多数（64.1%）的新冠肺炎确诊病例仍来自中国，但加拿大最早的 118 例新冠肺炎病例中只有 7.6%与来自中国的旅行者有关。在与中东、美国和欧洲有关的 118 例病例中，报告最多的旅行史。因此，回想起来，扩大对中国以外国家和地区的早期筛查工具和旅行限制可能有助于控制全球新冠肺炎的传播。
