Photo by Justin Sullivan/Getty Images Romaine lettuce contaminated with E. coli is making people sick again, and now, the Food and Drug Administration has a better idea of where it’s coming from: investigators working over Thanksgiving traced the tainted lettuce back to the Central Coast growing region of California. The FDA now says we’re clear…


Photo by Justin Sullivan/Getty Images

Romaine lettuce contaminated withE. coliis making people sick again, and now, the Food and Drug Administration has a better idea of where it’s coming from: investigators working over Thanksgiving traced the tainted lettuce back to the Central Coast growing region of California. The FDA now says we’re clear to eat romaine grown in other regions. But if you’re craving a caesar salad after last week’s produce purge and can’t tell where the romaine’s from, don’t buy it.

E. coli naturally hangs out in animal guts — and many strains aren’t harmful to people when ingested. But the strain involved in this latest outbreak,E. coliO157:H7, produces dangerous toxins and can cause kidney failure. So far, 43 people in the US and 22 people in Canada are sick, according to a statement from the FDA. At least two have developed kidney failure, according to last week’s announcements.

issued a nationwide warning against eatingallromaine. After investigating, the FDA is now limiting the warning to only romaine from the Central Coast growing regions of California, where romaine grows over the summer. “The outbreak appears to be related to ‘end of season’ romaine lettuce harvested from these areas,” the FDA said in its announcement today.

The agency says that there’s no reason to think that regions that grow romaine during the winter — including Florida, Mexico, and desert regions of California and Arizona — are contaminated. Lettuce grown hydroponically and in greenhouses should be fine, too. That’s why it’s key for produce on grocery store shelves to be clearly labeled, the FDA’s statement says: knowing where food comes from will help consumers avoid contaminated and recalled foodstuffs.

Going forward, labels on new romaine hitting grocery store shelves might look a little bit different, if the companies involved in the romaine supply chain follow the FDA’s advice; they should include a harvest location and a date, for one thing. And they should say whether the romaine was grown hydroponically or in a greenhouse. If the labels don’t include that information, the FDA’s advice is clear: “You should not eat or use it.”

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