About the Authors

Marwan Semaan

Affiliation Robert Koch Institute, Nordufer 20, Berlin, Germany

Daniel Ivanusic

Affiliations Robert Koch Institute, Nordufer 20, Berlin, Germany, Freie Universität Berlin, Kaiserswerther Str. 16–18, Berlin, Germany

Joachim Denner

DennerJ@rki.de

Affiliation Robert Koch Institute, Nordufer 20, Berlin, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JD MS. Performed the experiments: MS DI. Analyzed the data: MS DI. Wrote the paper: MS DI JD.