Most people don't even want to think about the prospect of another pandemic. But experts are warning that it's important to track and contain H5N1, more commonly known as bird flu, which has been detected in Ontario. Recently, it's forced poultry farms into quarantine and turned up in Canada geese. Last November, it caused the hospitalization of a British Columbia teen. So, what do we know about avian influenza - and how concerned should we be? Joining us now on that, in Guelph, Ontario: Dr. Shayan Sharif, professor of immunology at the Ontario Veterinary College; And here in our studio: Dr. Samira Mubareka, infectious-diseases physician, medical microbiologist, and scientist at the Sunnybrook Research Institute.

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