The city announced on Thursday morning that it is running out of vaccine appointments at its Toronto-run vaccination clinics.

In a tweet, Toronto revealed that all of its city clinics are either "fully booked" or "close to" fully booked from today until June 2021 — a reality that Mayor John Tory says is solely down to supply.

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"We have considerable additional capacity to allow us to do more in our city-operated clinics," Tory said at a media briefing on Wednesday, "if we had further increased supply of vaccine."

The city did add more than 63,500 appointments for its own vaccine clinics on Thursday, in part due to expanded eligibility in Ontario, but the majority of the new appointments will only be available between June 7 and 13.

COVID-19 vaccine appointments are also still available via pop-up clinics and at pharmacies in Toronto.