Home NEWS Health CDC comes close to an all-clear on romaine lettuce as E. coli outbreak nears historic level

CDC comes close to an all-clear on romaine lettuce as E. coli outbreak nears historic level

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It’s unlikely that anyone currently has edible romaine lettuce that’s contaminated with the toxic strain of E. coli bacteria that’s been sickening people nationwide since March. That’s the message that came Wednesday from the U.S. Centers for Disease Control and Prevention, and if not exactly a thundering signal of “all clear,” it’s pretty close.

Romaine lettuce has a shelf life of about 21 days. The current outbreak has been traced to the Yuma, Ariz. growing region, the source of virtually all lettuce sold in the U.S. during the winter months. The CDC said Wednesday that April 16 was the last day that romaine lettuce was harvested in the Yuma area. The leafy greens industry has shifted to California in the past two months.

“Romaine lettuce from the Yuma growing region is past its shelf life and is probably no longer being sold in stores or served in restaurants,” the CDC said in a news release. In the latest official update, the CDC notes that new cases of E. coli-related food poisoning came from the period when contaminated lettuce might still be in circulation or in home refrigerators: “It takes two to three weeks between when a person becomes ill with E. coli and when the illness is reported to CDC. The most recent illnesses reported to CDC started when romaine lettuce from the Yuma growing region was probably still available in stores, restaurants, and in peoples’ homes.”

The CDC has stopped advising consumers to throw away romaine lettuce if they can’t confirm where it’s from.

As of May 15, 172 people in 32 states had been sickened in the outbreak, an increase of 23 people and three  states since the last update a week earlier. One death has been reported. Of those sickened, 75 have been hospitalized, including 20 with kidney failure.

In scale, this outbreak is approaching that of the 2006 baby spinach E. coli outbreak that sickened more than 200 people. Five people died in that outbreak. The strain of E. coli, known as O157:H7, produces a Shiga toxin that can sicken people severely, causing diarrhea and vomiting and in severe cases kidney failure.

The U.S. Food & Drug Administration has been trying to discover exactly where and when the romaine involved in this latest outbreak was contaminated. One farm in Yuma has been identified as the source of the lettuce that sickened eight prisoners in Alaska, but FDA Commissioner Scott Gottlieb revealed on Twitter late Wednesday that the case is more complicated than that. The FDA, he wrote, “ruled out that the contamination was caused by just one farm suggesting it was a complex problem and will take further time to investigate.”

Lena H. Sun contributed to this report.



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