The producers of Pillsbury Unbleached All-Purpose Flour, used by many home bakers, have voluntarily recalled 12,245 cases sold to retailers, after a random inspection revealed traces of salmonella in one bag.

The cases, each of which contain about eight five-pound bags, were mostly sold to the Publix supermarket chain, and also to the Winn-Dixie markets, both of which have branches throughout the Southeast. The cases have best if used by dates of either April 19, 2020 or April 20, 2020.

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The Food and Drug Administration posted a notice on its Twitter and Facebook accounts Monday. But a spokesman noted that the F.D.A. has so far identified this as a class 2 recall, which means that the agency is monitoring the situation but has not issued a more formal alert, because no one has reported becoming ill from the flour.

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