WASHINGTON — Nestle USA has resumed manufacturing of Toll House prepackaged, refrigerated cookie dough products, now made with main ingredients from new suppliers. The products are not part of the ongoing recall and feature new labeling that includes a shield stating "new batch."

The announcement comes after recently completed DNA testing by the Food and Drug Administration of E. coli O157:H7 in a sample of prepackaged Nestle Toll House refrigerated cookie dough found a different genetic fingerprint than that linked to the outbreak strain that has affected 76 people in 31 states. Despite the finding, the F.D.A. and the Centers for Disease Control and Prevention continue to advise consumers not to eat any varieties of prepackaged Nestle Toll House refrigerated cookie dough that has been recalled.

The F.D.A. wrapped up its investigation of Nestle’s Danville, Va., plant on July 9. During a series of 10 inspections between June 18 and July 9, the F.D.A. made two observations: the workmanship of the facility’s equipment does not allow proper cleaning, and a lack of appropriate design to allow manufacturing systems to be maintained in an appropriate sanitary condition.

The F.D.A. said neither observation is believed to have any relationship to the presence of E. coli O157:H7 found in the retained product sample.

Nestle conducted similar testing before reopening the facility, including dismantling its production lines for thorough inspection and conducting extensive testing on equipment and ingredients, and found similar results.