Cookie Dough E. Coli Doesn't Match Outbreak Strain: FDA

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The strain of E. coli that sickened at least 69 people in 30 states doesn't match the strain found in a sample of raw cookie dough from the Nestlé USA plant in Danville, Va., says the U.S. Food and Drug Administration, the Associated Press reported.

Nestlé last month recalled all Toll House refrigerated cookie dough products made at the plant after the FDA told the company it suspected people had become sick after eating raw cookie dough contaminated with E. coli.

The finding that the strain found in the cookie dough and the strain that caused the 30-state outbreak are different could mean the dough was contaminated with multiple strains, the AP reported.

The company is working with the FDA on the ongoing investigation.

More than 1,000 tests have been done at the Danville plant, according to Nestlé, including thorough inspections of production lines, equipment and ingredients tests, and reviews of quality and safety procedures, the AP reported.