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The strategy is geared toward using newer data tools and focusing on higher-risk foods.
About 400 staffers have returned from furlough, 150 of them for food inspections.
As the outbreak grows to 59 cases, officials puzzle over why romaine and not other lettuce was tainted.
The CDC notes 11 more illnesses, raising the outbreak total to 43 cases in 12 states.
So far 32 illnesses have been confirmed in 11 states, as well as 18 cases in Canada.
So far 63 people have been hospitalized, and a patient in California has died.
Investigators were't able to determine exactly how the water contaminated the lettuce, which may have occurred by irrigation or the dilution of chemical to protect crops.
The CDC said only one third of the cases were linked to two major outbreaks and that it is exploring if a change in testing practices contributed to more detections.
Fifty-seven people have fallen ill with salmonellosis, while Listeria has caused 1 death.
Some illnesses reflect restaurant clusters linked to contaminated basil, cilantro.
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