Kind of a sensationalist headline, but the tl;dr is that Canada lacks a federal retraction and other misconduct in biomedical research body - unlike the US, which has one (for now).
By contrast, the U.S. Office of Research Integrity, a federal body which oversees misconduct in federally funded biomedical research, publicly lists all confirmed cases.
In 2010, the Council of Canadian Academies — an independent body that supports science-based policy — recommended the government create a Canadian Council for Research Integrity, a national office similar to the U.S. Office of Research Integrity. Canada never moved ahead with the proposal, and has no current plans to do so.