1. Institute of Molecular Virology and
2. Contributed equally as co-first authors
3. Department of Molecular and Medical Virology, Ruhr University Bochum, Bochum, Germany;
4. European Virus Bioinformatics Center, Jena, Germany; and
5. Department of Infectious Diseases, West German Centre of Infectious Diseases and
6. Institute for Virology, University Hospital of Essen and University of Duisburg-Essen, Essen, Germany
7. Institute for Microbiology and Hygiene, Ulm University Medical Center, Ulm, Germany;