Fig. 3From: Massive migration promotes the early spread of COVID-19 in China: a study based on a scale-free networkClusters of the selected city by the scale of migration. a Epidemic situation in the reported cities (b) Correlation of the scale of migration and confirmed cases between Jan 25 and Feb 15 (c) Mean connectivity by the potential soft thresholds (d) Confirmation of the selected soft threshold (e) Clustering of the top 25% of cities which had the highest number of confirmed cases by WGCNA. Dotted lines represent 90% prediction bandBack to article page