Map of states with confirmed or suspected coronavirus cases (as of 30 March)
  Confirmed 1~9  Confirmed 10~99  Confirmed 100~499  Confirmed 500~999  Confirmed 1000~9999  Confirmed ≥10000
Own work. Data from Robert Koch Institut https://www.rki.de/DE/Content/InfAZ/N/Neuartiges_Coronavirus/Fallzahlen.html
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