A major Israeli hospital will begin administering a fourth COVID-19 vaccine shot to 150 staff on Monday in a trial aimed at gauging whether a second booster is necessary nationwide, the facility said on Sunday.
Sheba Medical Center near Tel Aviv said its trial would shed light on the efficacy of a fourth dose and help decision-makers set health policy in Israel and abroad.
A Health Ministry panel of experts has recommended offering a fourth dose of the Pfizer/BioNTech vaccine to Israelis aged 60 and over who received a booster shot at least four months ago.

