The virus driving an outbreak that's spread to almost every province is a variant. It's a more pathogenic bug that renders the host infectious even before it displays any symptoms. Sound like any other virus you know?

The risk to humans is extremely low. So far. But what's already happening is devastation in the poultry industry, and widespread infections creating conditions for a potential mutation that could make things worse. Here's what you need to know.

GUEST: Jean-Pierre Vaillancourt, veterinarian and researcher, Université de Montréal

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