CDC uses shopper-card data to trace salmonella

March 10, 2010, 2:11 am by Associated Press Healthwire

CHAMPAIGN, Ill. (AP) -- As they scrambled recently to trace the source of a salmonella outbreak that has sickened hundreds around the country, investigators from the Centers for Disease Control and Prevention successfully used a new tool for the first time - the shopper cards that millions of Americans swipe every time they buy groceries....

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