Medical authorities in Ontario are investigating a number of cases of suspected swine flu that has caused more than 100 deaths in Mexico and spread to at least two other Canadian provinces, the United States and Europe.

Over the weekend, Canadian health officials confirmed six "relatively mild" cases of human swine influenza in British Columbia and Nova Scotia, but also warned more cases are likely in the near future.

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What is swine flu? What precautions can you take to protect you and your family?

Dr. Donald Low, medical director of Ontario's public health laboratories and chief microbiologist at Toronto's Mount Sinai Hospital, joins us this week to take your questions on swine flu.