Are leftover COVID-19 rapid antigen test kits still good to use? 

With the impending fall flu season and the continued circulation of new COVID-19 variants across the country, attention is once again turning to rapid antigen tests.
However, this flu season is different from the last, as the federal government stopped its shipments of rapid tests to the provinces and territories, meaning Canadians may have to look a little harder to find them, or even pay out of pocket, experts say.
Given the dwindling supply, increasing numbers of expired tests and the emergence of new COVID-19 variants in the country, the question arises: Are rapid tests still effective?
Global's Katherine Ward has more.
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