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The latest outbreak is different from one reported Wednesday in the New England Journal of Medicine. That one involved more than 300 cases of a different salmonella strain over eight years, and was traced to a hatchery in New Mexico.
The ability of officials to identify and trace outbreaks is improving. But there may also be a real increase in salmonella cases from chicks that's driven by the increasing popularity of backyard flocks, said Casey Barton Behravesh, a CDC veterinary epidemiologist.
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