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What is the H1N1 flu virus. The H1N1 flu virus – also known as human swine influenza – is a respiratory illness that affects the nose, throat and lungs. This virus usually affects pigs, but has been transferred to humans.The H1N1 flu virus has caused primarily mild illness in Canada, but Canadians need to be prepared to respond to a potentially more severe form of the virus that may emerge this fall.
Tags: Flu, h1n1, virus
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