1 Unit of Emerging Infectious Diseases, Institut Louis Malardé, Tahiti, 98713, French Polynesia. Electronic address: dmusso@ilm.pf.
2 Materno-fetal and Obstetrics Research Unit, Department Femme-Mère-Enfant, Maternity, University Hospital, Lausanne, Switzerland; Institute of Microbiology, Faculty of Biology and Medicine, University of Lausanne and University Hospital, Lausanne, Switzerland.
3 William C Gorgas Center for Geographic Medicine, Division of Infectious Diseases, University of Alabama at Birmingham, AL, USA.