[1] Inst Pasteur, Paris, France
[2] Aim Shams Univ, Fac Med, Cairo, Egypt
[3] Inst Pasteur, Emerging Dis Epidemiol Unit, Paris, France
[4] Menoufia Univ, Liver Dis Res Unit, Natl Hepatol & Trop Med, Res Inst, Cairo, Egypt
[5] Menoufia Univ, Natl Liver Inst, Cairo, Egypt
[6] INSERM, U818, Paris, France