COVID-19 vaccine this week, prompting Gen X’ers to proudly share their vaccination journeys on social media. Ontario, Alberta to lower minimum age for AstraZeneca COVID-19 vaccine from 55 to 40 On Sunday, Canada’s federal health minister, Patty Hajdu, said provinces and territories were “free to use” AstraZeneca’s vaccine on any groups aged 18 and above, despite the country’s National Advisory Committee on Immunization (NACI) recommendation to not give the vaccine to those under 55.Hajdu said that the NACI’s recommendations were evolving based on the current evidence and that there was nothing stopping provinces from more widely using the vaccines.B.C., Alberta, Manitoba and Ontario opened eligibility for anyone born in 1981 or.