MONTREAL—Quebec said Monday it will administer the newly approved Oxford-AstraZeneca vaccine to seniors, despite Canada’s national vaccine expert panel recommending against its use for people over the age of 65. The province’s vaccine expert committee is recommending that all approved vaccines be used immediately to prevent deaths and hospitalizations, the Health Department said in a news release, adding that the AstraZeneca vaccine “provides more flexibility in immunization efforts, especially for priority groups aged 70 to 79.” The newly approved vaccine has numerous advantages, the Health Department said, including the fact it doesn’t need to be kept frozen and can be used up to 48 hours after a vial is opened. “Its use will also be favoured for (patients) where mobile vaccination is an optimal strategy to reach them—at home, for example.” Canada’s National Advisory Committee on Immunization has said the AstraZeneca vaccine is not recommended for people aged 65 years …