The National Advisory Committee on Immunization is expected to release guidance on fourth doses of COVID-19 vaccine in the coming days.
A spokeswoman for the Public Health Agency of Canaxjmtzywda says the agency expects to publish NACI’s advice on fourth doses for "elderly populations at higher risk of severe disease" in early April.
Ontario Health Minister Christine Elliott, meanwhile, told legislators Thursday that she expects to receive advice from NACI imminently.
She says the advice will centre on which age groups should receive a fourth shot.
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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.
Earlier this week, U.S. regulators approved a fourth dose for Americans 50 and older if it’s been at least four months since their last vaccination.
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