Covid vaccine, the hypothesis of the fourth dose, the experts: “Yes for the frail, but premature for all”

Israel could initiate the inoculation of the fourth dose of the Covid-19 vaccine for the over 60s, for some sections of the population at risk and for medical personnel. Will we need the fourth dose too? In Israel these categories will be involved that have been immunized for at least four months. In addition, the minimum time interval between the second and third dose will be reduced from five to three months. AND