1. Institut Pasteur , 28 rue du dr Roux , Paris 75015, France
2. German National Academy of Science Leopoldina , Jägerberg 1, D-06108 Halle, Germany
3. Department of Infectious Disease, Centre for Bacterial Resistance Biology, Flowers Building, South Kensington Campus, Exhibition Road, Imperial College London , London SW7 2AZ , United Kingdom
4. Karolinska Institute , Tumor-och-cellbiologi, C1 Microbial Pathogenesis, 17177 Stockholm , Sweden
5. Faculty of Medicine, Institute for Molecular Infection Biology (IMIB), University of Würzburg , D-97080 Würzburg , Germany
6. Helmholtz Institute for RNA-based Infection Research (HIRI), Helmholtz Centre for Infection Research (HZI) , Josef-Schneider-Str2/Gebaude D15; É. D-97080 Würzburg , Germany