AstraZeneca COVID-19 vaccine in Canada and other parts of the world continues to raise concerns.On Tuesday, Quebec decided to lower its minimum age requirement for the AstraZeneca vaccine from 55 to 45 years.
Why does AstraZeneca vaccine guidance keep changing? Experts weigh in This came days after British Columbia, Manitoba, Alberta and Ontario decided to open AstraZeneca COVID-19 vaccine bookings to those aged 40 and older, down from the previous age requirement of 55 years and older.The change goes against the country’s National Advisory Committee on Immunization (NACI) recommendation to not give the vaccine to those under the age of 55 because of concerns over reports of rare blood clots.Canada’s federal health minister, Patty Hajdu,.