The country is not currently scheduled to receive additional supplies of the Oxford-AstraZeneca vaccine, which has been in heavy demand after the eligible age for the shot was dropped to 40-plus in several provinces.

That demand is only expected to increase after the National Advisory Committee on Immunization adjusted its age recommendation for the shots, announcing on Friday that Canadians 30 and older should get the AstraZeneca vaccine.

Some provinces, however, have said they don’t have enough supply to expand eligibility any further.

Federal Public Procurement Minister Anita Anand said last week the government is in talks with the United States to secure additional AstraZeneca doses after President Joe Biden suggested his country might share the shots with Canada.

The U.S. has stockpiled tens of millions of AstraZeneca shots, but health officials there have not approved the vaccine for use.