Canada's top leader said he's concerned about the number of cases of the H1N1 virus, commonly known as swine flu, among First Nations in Manitoba.

But Prime Minister Stephen Harper wasn't ready to declare an emergency even though Native leaders want more help. "It is a major concern and the Department of Health is working with the communities affected to try to address it," Harper said, CBC News reported.

Manitoba has nearly 260 cases of H1N1, with more than a quarter affecting Natives and rural residents.

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Swine flu on Manitoba reserves a major concern: PM (CBC 6/25)

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