“No one knows when a fresh surge of COVID-19 cases will emerge in Canada, but experts agree numbers are poised to rise and could very well explode in surveillance blindspots.

One need only look to South Korea, where infections spread anew through Seoul’s nightclubs and bars, to see how quickly containment successes unravel when undetected cases spark flareups.

Of course, nightclubs remain closed in Canada, but the infection risk of a vast array of public spaces is being tested for the first time in coming weeks — retail stores, golf ranges, bar patios and some offices among them.”