[1] Israel Minist Hlth, Natl Ctr Infect Control, Tel Aviv, Israel
[2] Tel Aviv Univ, Tel Aviv Sourasky Med Ctr, Div Epidemiol, IL-69978 Tel Aviv, Israel
[3] Meir Med Ctr, Kefar Sava, Israel
[4] Rambam Med Ctr, Clin Microbiol Lab, Haifa, Israel
[5] Bikur Holim Hosp, Jerusalem, Israel
[6] Barzilai Govt Hosp, Clin Microbiol Lab, Ashqelon, Israel