On Monday, a top Israeli hospital will launch a research to examine the safety and efficacy of a fourth coronavirus vaccination dosage.

According to a late Sunday announcement from Sheba Medical Center, 150 medical personnel who were vaccinated with third doses before August 20 and today have a low antibody level will receive a fourth treatment.

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The experiment is being conducted in collaboration with Israel’s Ministry of Health.

Last week, Prime Minister Naftali Bennett announced that the government would implement a panel of experts’ recommendation to inoculate older adults and medical personnel with a fourth dose of the Pfizer Inc.-BioNTech SE vaccine in an effort to shore up protection against the fast-spreading omicron variant.