[1] Hop Europeen Georges Pompidou, Virol Lab, Paris, France
[2] Hop Europeen Georges Pompidou, Serv Immunol Clin, Paris, France
[3] Ctr Hosp Reg Source, Serv Malad Infect & Trop, Orleans, France
[4] Inst Pasteur, Ctr Med, Serv Pathol Infect & Trop, F-75015 Paris, France
[5] Cent Publ Hlth Lab, Enter Resp & Neurol Viruses Lab, London NW9 5HT, England
[6] Hop Bichat Claude Bernard, INSERM, Unite U552, Lab Rech Antivirale, F-75877 Paris, France
[7] Hop Broussais, INSERM, Unite U430, F-75674 Paris, France
[8] Univ Paris 06, F-75252 Paris 05, France