1. The Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK
2. German National Academy of Science Leopoldina, Jägerberg 1, 06108 Halle, Germany
3. Centre for Bacterial Cell Biology, Biosciences Institute, Newcastle University, Baddiley-Clark Building, Newcastle upon Tyne NE2 4AX, UK
4. GSK Vaccines, Via Fiorentina, 1, 53100 Siena SI, Italy
5. The Shmunis School of Biomedicine and Cancer Research, Faculty of Life Sciences, Tel Aviv University, PO Box 39040, Tel Aviv 6997801, Israel
6. Institut Pasteur, 25-28 Rue du Dr Roux, 75015 Paris, France
7. Oxford Vaccine Group and Oxford Martin School, 34 Broad St, Oxford OX1 3BD, UK
8. Robert Koch Institute, Nordufer 20, 13353 Berlin, Germany