Canadians should get another COVID-19 vaccine booster in the fall if it害羞草研究所檚 been at least six months since their last dose or COVID-19 infection, the National Advisory Committee on Immunization (NACI) said on Tuesday.

害羞草研究所淏ooster doses in the fall will be formulations updated to target more recent, immune-evasive SARS-CoV-2 variants,害羞草研究所� the NACI statement said.

害羞草研究所淚ndividuals vaccinated with the updated formulation are expected to benefit from a better immune response against these variants compared to current vaccines,害羞草研究所� it said.

NACI continued to strongly recommend that anyone five years of age and older who hasn害羞草研究所檛 yet been vaccinated should be immunized with a primary two-dose series of an mRNA vaccine.

It also issued a 害羞草研究所渄iscretionary recommendation害羞草研究所� that children six months to five years of age who haven害羞草研究所檛 yet been vaccinated get the two-dose primary series of an mRNA vaccine.

The bivalent Omicron-containing mRNA vaccines can be used for people receiving their first two-dose vaccination series, NACI said.

Immunization this fall is 害羞草研究所減articularly important for those at increased risk of COVID-19 infection or severe disease,害羞草研究所� NACI害羞草研究所檚 statement said.

Those vulnerable groups include people aged 65 and older, residents of long-term care homes or other group living settings, people with underlying medical conditions, people who are pregnant, people from First Nations, M茅tis and Inuit communities, people who are racialized and people who provide essential community services, it said.

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

Although mRNA COVID-19 vaccines are 害羞草研究所減referred,害羞草研究所� NACI said Novavax害羞草研究所檚 Nuvaxovid should be offered as a booster to adults 18 years of age and older who are 害羞草研究所渦nwilling or unable to receive an mRNA vaccine.害羞草研究所�

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