![]() NACI Updated Guidance on COVID-19 vaccine booster doses in Canada.Health Canada – Adverse Events of Special Interest.Centers for Disease Control and Prevention.Health Canada and PHAC continue to monitor the safety of all COVID-19 vaccines approved in Canada, and will take appropriate action as needed. There have been no changes to the vaccine recommendations at this time by the CDC or Health Canada. Food and Drug Administration (FDA) regarding the possible new COVID-19 vaccine safety signal between the Pfizer bivalent COVID-19 vaccine and strokes in people aged 65 and over.Ĭurrently, in Canada, available data shows that there are no safety concerns related to stroke and mRNA bivalent vaccines. Health Canada and the Public Health Agency of Canada (PHAC) are aware of the recent announcement made by the Centre of Disease Control (CDC) and the U.S. Heart palpitations/irregular heart beat.Chest pain/feelings of pressure or tightness.Get medical attention right away if you develop any of these symptoms after getting a vaccine: Most vaccine side effects are mild and last for 1-3 days. Potential Side Effects and Seeking Medical Attention See Myocarditis and Pericarditis After Covid-19 Vaccines) for more information. Current data does not show a difference in myocarditis/pericarditis risk between Moderna and Pfizer after a booster dose in adults. The risk of myocarditis/pericarditis after a booster dose is lower compared to the second dose in the primary series. For this reason, vaccination is still recommended as the benefits outweigh the risks. Getting a COVID-19 infection puts you at more serious risk of myocarditis/pericarditis. Most people who have gotten myocarditis/pericarditis after vaccination had a mild illness and symptoms went away without any concerns about long-term complications. The situation is being closely monitored. In Canada, there have been rare reports of myocarditis/pericarditis after getting a COVID-19 mRNA vaccine. Myocarditis and pericarditis are types of inflammation in different parts of the heart. NACI and Public Health Ontario will continue to closely monitor any potential adverse effects.įor eligibility information, visit our Vaccines Eligibility & Doses page. It is expected to similar safety profile compared to the original Pfizer vaccine when used as a booster.It is expected to provide a stronger immune response against Omicron BA.1, BA.2 and BA.4/5 compared to the original Pfizer vaccine.There were no reports of vaccine-related cases of myocarditis, pericarditis or deaths.Adverse events were generally similar or lower compared to the original Moderna vaccine.People showed a stronger immune response against the original strain, Omicron BA.1 and BA.4/5 compared to the original Moderna booster.The monovalent Pfizer and Moderna vaccines, containing only the original strain of SARS-CoV-2, will still be used to complete the primary series.īased on the Moderna Bivalent clinical trials: There have been no clinical trials comparing the two bivalent vaccines, and both are likely to provide strong protection to Omicron variants. ![]() ![]() The bivalent booster can give better protection against highly contagious Omicron variants. Pfizer-BioNTech BA.4/5 Bivalent (10 mcg for ages 5 to 11 30 mcg for ages 12+)īivalent means that the vaccine targets two strains of COVID-19 – the original strain and Omicron.Moderna Spikevax BA.4/5 Bivalent (50mcg).Moderna Spikevax BA.1 Bivalent (25 mcg for ages 6 to 11 50 mcg for ages 12+).Health Canada has approved the following Omicron-containing mRNA vaccines as boosters: FebruBA.1 bivalent booster for 6 to 17 year olds.NovemBA.4/5 bivalent booster for 18 years and older.SeptemBA.1 bivalent booster for 18 years and older.Pediatric Moderna (25 mcg) on Jfor 6 months to 5 years old.Maa half dose (50 mcg) for 6 to 11 year olds.Moderna Spikevax (also known as Moderna).Decembivalent booster (10 mcg) for 5 to 11 year olds.Octobivalent booster (30 mcg) for 12 years and older.Pediatric Pfizer (3 mcg) on Septemfor 6 months to 5 years old.Pediatric Pfizer (10 mcg) on Augfirst booster for 5 to 11 year olds.Pediatric Pfizer (10 mcg) on Novemfor 5 to 11 year olds.Novemfirst booster for 18 years and older.Health Canada has approved mRNA vaccines for everyone 6 months of age and older. Learn more about how the mRNA vaccines work. We recommend that you get the first vaccine that is available to you, regardless of any previous doses. ![]() The mRNA does not change our DNA. mRNA vaccines are interchangeable which means that they are very similar and either one can be used. They use mRNA to give our cells instructions to make antibodies. ![]() These are “monovalent vaccines” which means that they contain one strain of the COVID-19 virus – the original strain. The Pfizer-BioNTech and Moderna Spikevax vaccines are ‘messenger RNA’ or ‘mRNA’ vaccines. ![]()
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