Dafna Yahav1,2, Tanya Babich2, Leonard Leibovici2,3. 1. Infectious Diseases Unit, Rabin medical center, Beilinson hospital, Petah-Tikva, Israel. 2. Sackler Faculty of Medicine, Tel Aviv University, Israel. 3. Medicine E, Rabin Medical Center, Beilinson hospital, Petah-Tikva, Israel.