City of Toronto update on COVID-19 – May 17, 2021
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epidemicpandemicCOVID-19coronavirusoutbreakbriefingupdateannouncementgovernmentdoctorchief medical officerspreadflatten the curveCanadatravelpatienttravelertravellerinfectedflightsymptomsemergencydiseaseOntarioessentialtradebusinessvaccinehealthself-isolateself-isolationreturningquarantineteststestingtracingTorontoJohn ToryEileen de VillaMatthew Peggvariantsvariants of concernlockownthird wave