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. 2020 Mar 14;34:101626. doi: 10.1016/j.tmaid.2020.101626

Fig. 1.

Fig. 1

The destinations and frequencies of different public transportation methods from Wuhan and the associations of transportation and distance with the epidemic of COVID-19 in mainland China.

Panel A shows distributions of COVID-19 cases within mainland China. Darker dots indicate larger numbers of COVID-19 cases. Up until February 9th, 118 cities have reported 1–9 cases; 174 cities have reported 10–99 cases; 28 cities have reported 100–499 cases; 5 cities have reported 500–999 cases; and 6 cities have reported ≥1000 cases. Panel B shows flight destinations and frequencies from Wuhan. Panel C shows bus destinations and frequencies from Wuhan. Panel D shows train destinations and frequencies from Wuhan. Higher weights of lines indicate higher frequencies. Panel E shows the correlation coefficients of daily frequencies of each transportation methods from Wuhan and the distance between Wuhan and other cities, with the daily number of COVID-19 cases. Panel F shows the correlation coefficients of daily frequencies of each transportation methods from Wuhan and the distance between Wuhan and other cities, with the cumulative number of COVID-19 cases. (A high resolution version of the image is available: https://data.mendeley.com/datasets/cgckdx7ykj/draft?a=10faa741-a27b-49e3-a576-22ebbf313c81).