1. Division of Immunology and Allergy; Lausanne University Hospital; Lausanne Switzerland
2. Swiss Vaccine Research Institute; Lausanne Switzerland
3. Division of Infectious Diseases; Lausanne University Hospital; Lausanne Switzerland
4. Department of Global Health; Academic Medicial Center; Amsterdam Institute for Global Health and Development; University of Amsterdam; The Netherlands
5. INSERM Unit 748; Université de Strasbourg, Strasbourg, France
6. Laboratoire de Virologie; IRBA; Grenoble France
7. UPMC Université de Paris 06 and INSERM; UMRS 943 Paris France
8. Cellular Immunology Laboratory; Pierre and Marie Curie University; INSERM UMRS 543, Pitié-Salpêtrière Hospital; Paris France