COVID-19, according to the board.In an email, the board says the students were notified by KFL&A public health on Dec. 22.The schools with cases are:The Limestone District School Board says the new cases pose no risk to students and staff.“No cohorts will be required to isolate at this time,” the school board said on Tuesday night.The LDSB provided a list of reasons why the positive cases pose no risk: High-risk exposure to COVID-19 identified at Amherstview Public School The school board says it will not provide additional details to maintain privacy and is working with KFL&A public health to stop the spread of the coronavirus within schools and in the community.There are now five cases identified at LDSB schools..