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Bars, restaurants and travel. parliament debating the changes and talks suspended until today. >> reporter: in tel aviv, a study found that a fourth shot- increases antibodies five-fold in the space of a week. the findings are preliminary and not yet peer reviewed. a second booster for those over 60, health care workers and those with suppressed immune systems. with cases soaring, naftali bennett held the findings as good news, saying the fourth dose is safe. the fourth dose works. >> reporter: ...

Much of an immune response, it is safe so we should get started on getting shots into kids arms. one quote from the "washington post" on this. we know two doses isnt enough and we get that, says one of the people familiar with the situation. the idea is, lets go ahead and start the review of two doses. if the data holds up in the submission, you could start kids on their primary baseline months earlier than if you dont do anything until the third dose data comes in. what do you think of that? >>...