A Center for Produce Safety-funded study is working to characterize the physiological changes that occur in Shiga toxin-producing Escherichia coli O157:H7 (STEC) bacteria that is present on romaine lettuce during postharvest cooling and refrigerated transport to processors, which could affect the pathogen’s virulence and detectability characteristics. The end goal of the research is to develop an easily accessible online tool for industry that identifies practices to mitigate the risks of STEC transmission via romaine lettuce.

A study by scientists from the U.S. Food and Drug Administration’s CFSAN and the U.S. Department of Agriculture’s ARS provides insight about factors that affect the presence of Shiga toxin-producing Escherichia coli in bagged romaine lettuce.

The U.S. Food and Drug Administration (FDA) investigated romaine lettuce from the Salinas, California and Yuma, Arizona growing regions and has released its findings.

From May to November 2021, the U.S. Food and Drug Administration (FDA) will be collecting and testing lettuce samples from Salinas Valley, CA, for Escherichia coli and Salmonella. 

The U.S. Food and Drug Administration (FDA) is launching an assignment to collect romaine lettuce samples from commercial coolers in the Yuma County, Arizona growing region during the current harvest season.

Out of an abundance of caution, Tanimura & Antle Inc. is voluntarily recalling its packaged single head romaine lettuce under the Tanimura & Antle brand, labeled with a packed on date of 10/15/2020 or 10/16/2020, due to possible contamination with E. coli 0157:H7.

Today, the U.S. Food and Drug Administration published the findings of an investigation into the contamination of romaine lettuce implicated in three outbreaks of E. coli O157:H7 during the Fall of 2019.

FDA, along with CDC and state and local partners, are investigating an outbreak of 14 illnesses caused by E. coli O103 in Iowa, Illinois, Missouri, Texas and Utah.

FDA, CDC, and state health authorities are investigating an outbreak of illnesses caused by E. coli O157:H7 in the United States.

FDA, CDC, and state health authorities are investigating an outbreak of illnesses caused by E. coli O157:H7 in the United States.