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Hierarchical clustering of death rates of the 17 countries (15 with lockdown & 2 without lockdown divided into two clusters). X-axis: countries; Y-axis: distance from the mean. Cluster 1: Spain, Germany, Italy, UK, and France. Cluster: Belgium, Austria, New Zealand, India, Hungary, Poland, Malaysia, Sweden and South Korea. Blue lines: Division of the two main clusters. Green lines: Individual countries under cluster 1. Red lines: Individual countries under cluster 2.
