1. Infection Control Program, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.
2. Division of Infectious Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.
3. Center for Vaccinology, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.
4. Division of Clinical Epidemiology, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.
5. World Health Organization Collaborating Center for Vaccine Immunology, Faculty of Medicine, Geneva, Switzerland.
6. Department of Infectious Diseases, Leiden University Medical Center, Leiden, Netherlands.
7. Division of Immunology and Allergy, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland.
8. Centre de Recherches Médicales de Lambaréné, Lambaréné, Gabon.
9. Institut für Tropenmedizin, Universitätsklinikum Tübingen, and German Center for Infection Research, Tübingen, Germany.
10. Department of Microbiology and Immunology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
11. Laboratory of Molecular Microbiology and Biotechnology, Department of Medical Biotechnologies, University of Siena, Siena, Italy.
12. Sclavo Vaccines Association, Siena, Italy.
13. NewLink Genetics Corp., 94 Jackson Road, Devens, MA 01439, USA.