CTV National News for Saturday, May 16, 2026: What is a ‘presumptive’ positive case for hantavirus?

Health officials say one of the four Canadians has not formally tested positive for the virus, but they are believed to be ‘presumptive positive,’ some Canadians say they can’t afford to take their trailers and RVs out camping this summer, new U.S. tariffs are set to impact Canadian mushrooms starting on Monday, leaving some farmers unhappy; and more.