A new study published in The New England Journal of Medicine has focussed on the relative effectiveness of the fourth dose, compared to the three doses vaccination regime, against confirmed infection and severe illness among older persons in the Israeli population.
COVID-19 protection increases after fourth vaccine dose but declines quickly
A new study published in The New England Journal of Medicine has focussed on the relative effectiveness of the fourth dose, compared to the three doses vaccination regime, against confirmed infection and severe illness among older persons in the Israeli population.