National Advisory Committee on Immunization to release guidance today on fourth doses of COVID-19 vaccine.Christine Elliott told legislators that the advice will centre on what age groups should receive a fourth shot.NACI previously recommended that people who are “moderately to severely immunocompromised” receive a fourth dose of the vaccine six months after getting their third shot.The committee says that data on the fourth dose is currently limited, but those who are immunocompromised are at a higher risk both of severe outcomes of COVID-19 and of decreasing protection over time.
4th COVID-19 vaccine dose: What’s the science behind another booster? It comes as public health indicators tick upwards across Canada, with Quebec warning that a sixth wave of the pandemic has begun.Earlier this week, U.S.