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Asharq Al-Awsat
Asharq Al-Awsat
World
Asharq Al-Awsat

Israeli Study Shows 4th Shot of COVID-19 Vaccine Less Effective on Omicron

93-year-old Shari Marco receives a fourth dose of the coronavirus disease (COVID-19) vaccine following a vaccination party after Israel approved a second booster shot for the immuno-compromised, people over 60 years and medical staff in a retirement home in Netanya, Israel January 5, 2022. (Reuters)

A fourth shot of COVID-19 vaccine boosts antibodies to even higher levels than the third jab but it is not enough to prevent Omicron infections, according to a preliminary study in Israel.

Israel's Sheba Medical Center has given second booster shots in a trial among its staff and is studying the effect of the Pfizer booster in 154 people after two weeks and the Moderna booster in 120 people after one week, said Gili Regev-Yochay, director of the Infectious Diseases Unit.

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