Israel’s Fourth Shot Boosts Covid Antibodies Fivefold, Early Trial Data Show

People who received a fourth dose of the coronavirus vaccine saw a fivefold increase in antibodies one week after the injection, according to preliminary trial data from Israel.

“That suggests a much higher level of protection than without the shot, with regard to both infection and severe illness,” Prime Minister Naftali Bennett said Tuesday in a visit to Sheba Medical Center, which is conducting the trial.