1. School of Health Science, Ashkelon Academic College, Ashkelon, Israel
2. Division of Epidemiology, Ministry of Health, Jerusalem, Israel
3. Central Virology Laboratories, Ministry of Health, Tel Hashomer, Israel
4. Public Health Laboratories, Ministry of Health, Jerusalem, Israel
5. Ministry of Environmental Protection, Jerusalem, Israel
6. School of Public Health, Tel Aviv University, Tel Aviv, Israel
7. Central Department of Health, Ramla, Israel
8. Tel Aviv Department of Health, Tel Aviv, Israel
9. Public Health Directorate, Ministry of Health, Jerusalem, Israel