Hospitalized Patients With Severe Coronavirus Disease 2019 During the Omicron Wave in Israel: Benefits of a Fourth Vaccine Dose

Tal Brosh-Nissimov, Khetam Hussein, Yonit Wiener-Well, Efrat Orenbuch-Harroch, Meital Elbaz, Shelly Lipman-Arens, Yasmin Maor, Yael Yagel, Bibiana Chazan, Mirit Hershman-Sarafov, Galia Rahav, Oren Zimhony, Adi Zaidman Shimshovitz, Michal Chowers