Salmonella :: Peanut butter infected 628 people with salmonella

In November 2006, public health officials at CDC and state health departments detected a substantial increase in the reported incidence of isolates of Salmonella serotype Tennessee.

In a multistate case-control study conducted during February 5–13, 2007, illness was strongly associated with consumption of either of two brands (Peter Pan or Great Value) of peanut butter produced at the same plant.

Based on these findings, the plant ceased production and recalled both products on February 14, 2007.

The outbreak strain of Salmonella Tennessee subsequently was isolated from several opened and unopened jars of Peter Pan and Great Value peanut butter and from two environmental samples obtained from the plant. New case reports decreased substantially after the product recall.

As of May 22, 2007, a total of 628 persons infected with an outbreak strain of Salmonella serotype Tennessee had been reported from 47 states since August 1, 2006. Local and state public health officials in multiple states, with assistance from CDC and the Food and Drug Administration (FDA), are continuing to investigate this outbreak caused by peanut butter, a new food source for salmonellosis in the United States.

All remaining jars of Peter Pan or Great Value peanut butter with a product code beginning with 2111 should be discarded.

Investigation of the cases is ongoing to determine whether persons are still eating peanut butter from contaminated lots. The source of the peanut butter contamination is unknown. FDA is investigating the plant operations, including heating temperatures, to determine the mechanism.

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