2 years into the pandemic, burning questions remain about COVID-19 — and how we fight it cbc.ca - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from cbc.ca Daily Mail and Mail on Sunday newspapers.
Over the course of the COVID-19 pandemic, scientists have learned a lot about how this coronavirus operates. But burning questions remain over how it will evolve long-term, where it will show up next and how humanity can fight back against this still-mysterious pathogen.