The unusual influenza A H1N1 swine virus was first reported earlier this week, when the U.S. Centers for Disease Control and Prevention announced it had found cases with the virus.

Mexico sent samples of its influenza virus to be tested at the CDC and the National Microbiology Laboratory in Winnipeg. Both labs found positives of swine flu.

Testing indicates the virus shows sensitivity to Tamiflu and Relenza, the two anti-viral drugs that Canada has stockpiled.

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