[1
]
Policlinique Médicale Universitaire, Lausanne, Switzerland. Electronic address: olga.de-santis@hospvd.ch.
[2
]
Division of Immunology and Allergy, Lausanne University Hospital, Switzerland.
[3
]
Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute,
Basel, Switzerland.
[4
]
Clinical Trial Unit, Lausanne University Hospital, Switzerland.
[5
]
Policlinique Médicale Universitaire, Lausanne, Switzerland.
[6
]
Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National
Institutes of Health, Bethesda, MD, USA.
[7
]
GSK Vaccines, Rixensart, Belgium.
[8
]
WHO, Geneva, Switzerland.
[9
]
Policlinique Médicale Universitaire, Lausanne, Switzerland; Infectious Diseases Service,
Department of Medicine, Lausanne University Hospital, Switzerland; Department of Epidemiology
and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland.