A fourth dose of the vaccine may double protection against coronavirus. The results of a study in the 60+ age group conducted by the Israeli Ministry of Health in cooperation with the Weizmann Institute, the Technion, and the Gartner Institute show this.
According to RIA Novosti, the study included data from 400,000 Israelis who received the fourth vaccination and 600,000 Israelis who received three doses of the vaccine.
The study found that a fourth dose of the coronavirus vaccine given in the over-60 age group doubled protection against infection. Also, people who received the fourth dose of the vaccine were three times less likely to have a severe form of the disease.