Author of the article: Tyler Kula Publishing date: Dec 27, 2020 • December 28, 2020 • 2 minute read • Panels on the outside wall of an addition at Great Lakes Secondary School in Sarnia mark the building's original construction in 1961 as St. Clair Secondary School, and its recent expansion as the home of Great Lakes. Paul Morden/Postmedia Network Article content Three new COVID-19 workplace outbreaks, an outbreak at a Sarnia high school and another at a Sarnia long-term care home have been declared, local health officials say. Four of the outbreaks, all declared Saturday by public health, involved 11 total confirmed cases – one workplace with five, two with two each and two at Great Lakes secondary.