COVID-19 vaccine: Moderna recall approved by Health Canada
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TORONTO – Moderna’s Spikevax COVID-19 vaccine has been approved by Health Canada as a booster shot for adults 18 years of age and older, the agency said Friday.
The booster, which is half a dose of the regular 50 g vaccine, should be given at least six months after the person has been fully vaccinated.
The news comes days after Pfizer-BioNTech’s Comirnaty vaccine was approved as a booster for people over 18, although third doses have already been given to high-risk groups across the country.
The Pfizer-BioNTech booster dose is the same as the regular dose and should also be given at least six months after the first two doses.
The booster is intended to help those who have previously been fully vaccinated maintain their protection against death or serious illness and hospitalization due to the SARS-CoV-2 virus and its variants, including the Delta variant.
There is evidence of decreased protection over time and all provinces and territories in Canada have started recommending a booster dose for high-risk groups, including residents of long-term care homes, health care workers and immunocompromised people.
• COVID-19 vaccine booster eligibility by province and territory in Canada
Previously, the National Immunization Advisory Committee had also recommended an mRNA booster for people who received two doses of Oxford-AstraZeneca or one dose of the Janssen vaccine.
Health Canada has stated that the Moderna vaccine booster meets all requirements for safety, efficacy and quality, following independent review.
According to the company, the approval was backed by the Phase 2 clinical study, which found that neutralizing antibody titers decreased by six months, especially against the variants of concern, for participants who received an injection. booster six to eight months after their second injection. The third dose increased the neutralizing titers “considerably above the Phase 3 baseline,” the company said, adding that the side effects and safety of the booster dose were similar to those seen after the treatment. second injection.
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