1. Central Virology Laboratory, Public Health Services, Ministry of Health, Chaim Sheba Medical Center, Ramat Gan, Israel
2. The Israel Center for Disease Control, Israel Ministry of Health, Ramat-Gan, Israel
3. Department of Laboratories, Public Health Services, Ministry of Health, Jerusalem, Israel
4. Public Health Services, Ministry of Health, Jerusalem, Israel
5. School of Public Health, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel