Centre Hospitalier Régional Universitaire (CHRU) de Montpellier, Département de Bactériologie-Virologie, Montpellier, France; Université Montpellier 1, Montpellier, France; INSERM U 1058, Infection by HIV and by Agents with Mucocutaneous Tropism: from Pathogenesis to Prevention, Montpellier, France.