[1] Tel Aviv Univ, Sch Mol Cell Biol & Biotechnol, George S Wise Fac Life Sci, Tel Aviv, Israel
[2] Cha Sheba Med Ctr, Minist Hlth, Cent Virol Lab, Ramat Gan, Israel
[3] Tel Aviv Univ, Sackler Fac Med, Sch Publ Hlth, Dept Epidemiol & Prevent Med, Tel Aviv, Israel
[4] Israel Minist Hlth, Israel Ctr Dis Control, Tel Hashomer, Israel