Few safeguards for Mexican produce heading north

At the end of a dirt road in northern Mexico, the conveyer belts processing hundreds of tons of vegetables a year for U.S. and Mexican markets are open to the elements, protected only by a corrugated metal roof.

The U.S. Food and Drug Administration suspects this packing plant, its warehouse in McAllen, Texas, and a farm in Mexico are among the sources of the United States' largest outbreak of food-borne illness in a decade, which infected at least 1,440 people with a rare form of salmonella.

A plant manager confirmed that workers handling chili peppers aren't required to separate them according to the sanitary conditions in which they were grown, offering a possible explanation for how such a rare strain of salmonella could have caused such a large outbreak.

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