[1] Univ Lausanne Hosp, Dept Woman Mother Child, Maternofetal & Obstet Res Unit Obstetr Serv, CH-1011 Lausanne, Switzerland
[2] Inst Louis Malarde, Unit Emerging Infect Dis, Tahiti, French Polynesi, France
[3] Aix Marseille Univ, AP HM, IRD, SSA,VITROME,IHU Mediterranee Infect, Marseille, France
[4] Univ Amsterdam, Acad Med Ctr, Div Internal Med, Ctr Trop Med & Travel Med,Dept Infect Dis, Amsterdam, Netherlands
[5] Univ Alabama Birmingham, William C Gorgas Ctr Geog Med, Div Infect Dis, Birmingham, AL USA