About the Authors

Bärbel Stecher

Affiliation Institute of Microbiology, Swiss Institute of Technology Zurich, Zurich, Switzerland

Riccardo Robbiani

Contributed equally to this work with: Riccardo Robbiani, Alan W Walker

Affiliation Institute of Microbiology, Swiss Institute of Technology Zurich, Zurich, Switzerland

Alan W Walker

Contributed equally to this work with: Riccardo Robbiani, Alan W Walker

Affiliation Wellcome Trust Sanger Institute, Hinxton, Cambridge, United Kingdom

Astrid M Westendorf

Affiliation Department of Mucosal Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany

Manja Barthel

Affiliation Institute of Microbiology, Swiss Institute of Technology Zurich, Zurich, Switzerland

Marcus Kremer

Affiliation Technical University Munich, Munich, Germany

Samuel Chaffron

Affiliation Bioinformatics Group, Institute of Molecular Biology, University of Zurich, Zurich, Switzerland

Andrew J Macpherson

Affiliation Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada

Jan Buer

Affiliation Department of Mucosal Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany

Julian Parkhill

Affiliation Wellcome Trust Sanger Institute, Hinxton, Cambridge, United Kingdom

Gordon Dougan

Affiliation Wellcome Trust Sanger Institute, Hinxton, Cambridge, United Kingdom

Christian von Mering

Affiliation Bioinformatics Group, Institute of Molecular Biology, University of Zurich, Zurich, Switzerland

Wolf-Dietrich Hardt

To whom correspondence should be addressed. E-mail: hardt@micro.biol.ethz.ch

Affiliation Institute of Microbiology, Swiss Institute of Technology Zurich, Zurich, Switzerland

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

BS, RR, AWW, AMW, JB, JP, GD, CvM, and WDH conceived and designed the experiments. BS, RR, AWW, AMW, MB, and AJM performed the experiments; AWW performed microbiota analysis by 16S gene sequencing. BS, RR, AWW, MK, SC, CvM, and WDH analyzed the data. BS and WDH wrote the paper.