1. Inserm, Bordeaux Population Health Research Center, UMR 1219, INRIA SISTM, University of Bordeaux, ISPED; 33000 Bordeaux France
2. Vaccine Research Institute (VRI), Groupe Henri-Mondor Albert-Chenevier; 94010 Creteil France
3. Vaccine and Infectious Disease Division; Fred Hutchinson Cancer Research Center; 1100 Fairview Avenue N, Seattle Washington 98109 USA