1 Materno-fetal and Obstetrics Research Unit, Department "Femme-Mère-Enfant", University Hospital, Lausanne 1011, Switzerland; Institute of Microbiology, Faculty of Biology and Medicine, University of Lausanne and University Hospital, Lausanne, Switzerland.
2 Unit of Emerging Infectious Diseases, Institut Louis Malardé, Tahiti, French Polynesia.
3 Multidisciplinary Center of Prenatal Diagnosis, Obstetrics and Gynecology, Department "Femme-Mère-Enfant", University Hospital of Martinique, Fort de France, France.
4 School of Pharmaceutical Sciences, University of Geneva and University of Lausanne, Geneva, Switzerland; Swiss Teratogen Information Service and Division of Clinical Pharmacology, University Hospital of Lausanne, Lausanne, Switzerland; Department of Epidemiology, Harvard T H Chan School of Public Health, Boston, MA, USA.
5 Materno-fetal and Obstetrics Research Unit, Department "Femme-Mère-Enfant", University Hospital, Lausanne 1011, Switzerland; Institute of Microbiology, Faculty of Biology and Medicine, University of Lausanne and University Hospital, Lausanne, Switzerland. Electronic address: david.baud@chuv.ch.