Waterloo’s top doc issues plea for people to only get COVID-19 tests when necessary The news came a day after the board announced that four others had contracted the virus.[ Sign up for our Health IQ newsletter for the latest coronavirus updates ]That number included high schoolers at Huron Heights Secondary School and Forest Heights Collegiate Institute in Kitchener as well as elementary students at Clemens Mills Public School in Cambridge and Williamsburg Public School in Kitchener.On Sunday, it was also announced that an elementary student at Riverside Public School in Elmira had also tested positive for coronavirus.