I SERIOUSLY doubt anyone in Canada had the covid-19 virus before January 2020. It's incubation period is SO long that an infected person with ZERO symptoms can pass it to hundreds of people in a 2 week period and then those hundreds could spread it to thousands of people so you see where I'm going with this right? Covid-19 spreads like wildfire compared to regular influenza and that is one of the reasons the whole world is shutting down/locking down. Now I'm no doctor, but medical/science stuff is a great interest to me so I take it seriously.