The size of the dose is one-third of the dose administered to adults and adolescents over the age of 12, the country’s federal doctors said at a press conference Friday. The dose is lower than for adults because healthy children have a strong immune system.
Health Canada, the federal health department, recommends that doses of the vaccine be administered at least three weeks apart, but provinces may decide otherwise, explained Dr. Marc Berthiaume, director of the health science office of the Ministry of Health. The National Advisory Committee on Immunization (NACI) recommends extending the dose interval to 8 weeks due to the growing data on stronger immunity acquired with this interval and with a lower risk of cardiac problems, explained Federal Chief Medical Officer of the country, Dr. Theresa Tam. For example, it is already known that the largest Canadian province, Ontario, intends to use an eight-week interval when vaccinating children.
Health Canada also recommends that there be a two-week gap between one dose of the COVID-19 vaccine and any other vaccine. The idea is to be able to clearly identify which side effects are associated with which vaccine when you experience side effects.
Dr. Tam noted that currently the highest number of disease outbreaks is in schools, especially in primary schools.
Clinical trials have shown that the approved dose of the vaccine is 90.7 percent. effective in disease prevention in children 5 to 11 years of age, and no serious side effects have been reported. Doctors also referred to the rare cases of myocarditis and pericarditis that occurred in adults vaccinated with mRNA vaccines. The chief adviser to the federal health ministry, Dr. Supriya Sharma, noted that developing Covid-19 is associated with a significantly higher risk of cardiac problems than the risk of vaccine problems.
The main side effects reported were similar to adolescents and young adults, but occurred less frequently, except for redness and swelling at the injection site, these appeared slightly more frequently. Other side effects include fatigue and headache. Most of the reactions were moderate in intensity and the symptoms went away quickly on their own, said Sharma. The federal government has ordered 2.9 million doses of the Pfizer / BioNTech vaccine and announced that deliveries will begin after approval for use in Canada is obtained.
Pfizer / BioNTech submitted documentation on vaccines for children 5-11 years old a month ago. Last week, Moderna submitted an application for approval for use in Canada of its vaccine for children aged 6-11.
Last week, the federal health department of Canada approved the use of a third dose of the Pfizer / BioNTech and Moderna vaccines in Canada as the so-called booster. The Pfizer / BioNTech vaccine is given as a full dose, while Moderna is given half the dose.
Earlier, in late October, the National Advisory Council on Immunization (NACI) recommended a third dose to be given to people who had previously been vaccinated with AstraZeneca, as well as to people at risk, including after the age of 70 and healthcare professionals. Even before the NACI recommendation, some provinces decided to administer a strengthening dose to residents of nursing homes for the elderly and people with reduced immunity.
According to the data of the federal health ministry, since the beginning of the pandemic, almost 1.76 million people have fallen ill with Covid-19 in Canada, 29,462 people have died. The so-called There are currently over 23,500 active cases, mainly in Quebec, Ontario, British Columbia and Alberta.
More than 59.8 million doses of Covid-19 vaccines have been administered in total in Canada by Friday, according to Covid19tracker.ca. More than 78.7% of the total population received at least one dose of the vaccine, and 75.3% are fully vaccinated.