Officials have warned against continuing consumption of Romaine lettuce from the Yuma, Arizona growing region.
"CDC is updating its advice to consumers".
That means that the agency is no longer advising consumers to avoid buying romaine lettuce in connection with the outbreak.
Any romaine lettuce being sold now is nearly certainly not from the Yuma, Arizona region and so unlikely to carry the E. coli bacteria that's been making people sick, the Centers for Disease Control and Prevention says.
Romaine lettuce of all varieties from the Yuma, Arizona, region has been blamed as the source of this outbreak.
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More than 170 people in 32 states have fallen ill from eating romaine lettuce contaminated with the bacteria E. coli, the CDC said. Marler says this strategy has brought him to Freshway, a supplier serving the Midwest and East Coast, and ideally will lead him to the as-yet-unidentified farm or farms in Yuma, Ariz., that are responsible for the outbreak.
It's unlikely that anyone now has edible romaine lettuce that's contaminated with the toxic strain of E. coli bacteria sickening people nationwide since March.
The CDC said 20 people had developed a severe outcome of E. coli infection called hemolytic uremic syndrome. The death in California remains the only one in this outbreak. The most recent illnesses reported to the CDC started when romaine lettuce from the Yuma, Arizon region was still available. Numerous other illnesses are linked to chopped romaine lettuce.
Now three more states have reported ill people: Iowa, Nebraska, and OR, the CDC said.
The FDA, he tweeted, "ruled out that the contamination was caused by just one farm suggesting it was a complex problem and will take further time to investigate".