Windsor-Essex reports 28 new COVID-19 cases â lowest number since late March There were 28 new cases of COVID-19 in Windsor-Essex in southwestern Ontario on Tuesday, the lowest daily increase since the end of March â although the medical officer of health says there needs to be a pattern of fewer cases before loosening restrictions is considered. Social Sharing 'We have to have a pattern of seeing those lower case rates' medical officer of health says CBC News · Posted: May 04, 2021 11:48 AM ET | Last Updated: May 5 As of Tuesday, about 36 per cent of Windsor-Essex residents have been vaccinated against COVID-19 with at least one dose.(Sanjay Maru/CBC)