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How does salmonella get into peanut butter?

Daniella Segura/Flickr

The Food and Drug Administration announced this week that nSpired Natural Foods, a major supplier of nut butters, is voluntarily recalling some peanut and almond butters over concerns about possible salmonella contamination. Michael Doyle, director of the Center for Food Safety at the University of Georgia, explains how peanut butter becomes contaminated with salmonella and why it seems to happen so often.

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