Canada's National Advisory Committee on Immunization (NACI) says people should get another COVID-19 vaccine booster in the fall if it's been at least six months since their last dose or COVID-19 infection. 

It says the booster doses will be new formulations updated to target more recent, immune-evasive variants. 

NACI continues to strongly recommend that anyone five years of age and older who hasn't yet been vaccinated should be immunized with a primary two-dose series of an mRNA vaccine. 

It also has a "discretionary recommendation" that children six months to five years of age who haven't yet been vaccinated get the two-dose primary series of an mRNA vaccine.  

In June, NACI said that the bivalent mRNA vaccines can be used for people receiving their first two-dose vaccination series. 

The mRNA vaccines available in Canada are manufactured by Pfizer-BioNTech and Moderna. 

This report by The Canadian Press was first published July 11, 2023.

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