1. Department of Pediatrics, Samson Assuta Ashdod University Hospital, Ashdod, Israel
2. Faculty of Health Sciences, Ben-Gurion University in the Negev, Beer-Sheva, Israel
3. Department of Epidemiology and Preventive Medicine, School for Public Health, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
4. Israel Center for Disease Control, Ministry of Health, Tel Hashomer, Ramat Gan, Israel
5. Microbiology laboratory, Samson Assuta Ashdod University Hospital, Ashdod, Israel
6. Infectious Diseases Unit, Samson Assuta Ashdod University Hospital, Ashdod, Israel