TORONTO -- Three city-operated mass immunization clinics have opened their doors in Toronto, a moment that Mayor John Tory says that staff have been “planning for and waiting for” since the early days of the pandemic. The clinics at the Metro Toronto Convention Centre, the Scarborough Town Centre and the Toronto Congress Centre all began administering vaccines at 11 a.m. Each of the clinics are currently set up to vaccinate 450 people a day but the goal is to ramp up their operations by the middle of April so that approximately 3,000 doses can be administered at each clinic, seven days a week.