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Origin of 2009 H1N1 flu (Swine flu) : questions and answers
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November 25, 2009
[PDF-221.49 KB]
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Journal Article:Human Influenza A (H1N1), 2009
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Content Notes:Where did the 2009 H1N1 flu virus come from? -- Why does CDC think this? -- Have viruses similar to the 2009 H1N1 virus been seen before? -- Why does the 2009 H1N1 flu virus have genes from humans, birds, and from pigs on different continents? -- Was the 2009 H1N1 flu virus created in a laboratory? -- How often does reassortment of influenza viruses occur? -- What can be done to identify influenza viruses circulating in animals that have pandemic potential? -- What scientific studies are available for additional information?
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