Letter to the editor: Wide indication for SARS-CoV-2-testing allowed identification of international risk areas during the early phase of the COVID-19 pandemic in Germany Rexroth, Ute and Hamouda, Osamah and Hanefeld, Johanna and Ruehe, Bettina and Wieler, Lothar H and Schaade, Lars, Eurosurveillance, 25, 2001119 (2020), https://doi.org/10.2807/1560-7917.ES.2020.25.23.2001119