CanadaOntario Revises School and Child Care Centre Screening GuidelinesSaveMark Us Preferred on GooglePrintStudents arrive at Hunter's Glen Junior Public School, in Scarborough, Ont., on Sept. 15, 2020. Reuters/Carlos OsorioThe Canadian Press10/1/2020|Updated: 10/1/2020TORONTO—Ontario is changing its COVID-19 symptom screening guidance for the province’s schools and child care centres.The province is now asking parents to keep their children home from school for 24 hours if they have either a runny nose or headache.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.