Alice Wittig, Fabio Malcher Miranda, Martin Hölzer, Tom Altenburg, Jakub Maciej Bartoszewicz, Sebastian Beyvers, Marius Alfred Dieckmann, Ulrich Genske, Sven Hans-Joachim Giese, Melania Nowicka, Hugues Richard, Henning Schiebenhoefer, Anna-Juliane Schmachtenberg, Paul Sieben, Ming Tang, Julius Tembrockhaus, Bernhard Y. Renard, Stephan Fuchs

• The ongoing pandemic caused by SARS-CoV-2 emphasizes the importance of genomic surveillance to understand the evolution of the virus, to monitor the viral population, and plan epidemiological responses. Detailed analysis, easy visualization and intuitive filtering of the latest viral sequences are powerful for this purpose. We present CovRadar, a tool for genomic surveillance of the SARS-CoV-2 Spike protein. CovRadar consists of an analytical pipeline and a web application that enable the analysis and visualization of hundreds of thousand sequences. First, CovRadar extracts the regions of interest using local alignment, then builds a multiple sequence alignment, infers variants and consensus and finally presents the results in an interactive app, making accessing and reporting simple, flexible and fast.