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Registered nurse Sara Hoffman, left, draws a blood sample from Ariel Snowden-Wright, from Chicago, as fellow student Cherry Tran comforts her at Duke University in Durham, N.C. , Thursday, Sept. 10,2009. The students are participating in a swine flu genome testing study at Duke funded by the Defense Department. (AP Photo/Gerry Broome)

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Study tries to detect flu before the first sneeze

• By ncs-import
• September 23, 2009