TORONTO Amid a massive COVID-19 outbreak at Canada Post’s Mississauga, Ont. facility, on-site mandatory testing for the disease is now being carried out. Since the first day of this year, 273 positive cases of the novel coronavirus have been confirmed at the Gateway facility, including 23 since Wednesday. “Peel Public Health has now directed that Canada Post arrange mandatory COVID-19 testing for all employees who work anywhere in the Gateway facility, including those who have already had a test,” a spokesperson for the Crown corporation, Phil Legault, said in an update provided on Saturday. The on-site mandatory testing began on Friday with Gateway East, Shift 2, Legault said, and will continue on a “larger scale” scale next week.