1. Institute of Microbiology, Center for Research on Intracellular Bacteria, Faculty of Biology and Medicine, University and University Hospital of Lausanne, Lausanne, Switzerland;
2. Department “Femme-Mère-Enfant”, Materno-Fetal and Obstetrics Research Unit, University Hospital, Lausanne, Switzerland;
3. Infectious Diseases Unit, University hospital, Lausanne, Switzerland