1. Infection Prevention and Control Unit, Sheba Medical Center, Ramat Gan, Israel
2. Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
3. Gertner Institute, Tel Hashomer, Israel
4. Department of Neonatology, The Edmond and Lily Safra Children’s Hospital, Sheba Medical Center, Ramat Gan, Israel
5. Maternity and Gynecology Center, Sheba Medical Center, Ramat Gan, Israel
6. Infectious Diseases Unit, Sheba Medical Center, Ramat Gan, Israel