Plus tips on how to stay safe on smoky days
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Tuesday, July 21, 2026

 
 

BY MEG WINGERTER

On Friday, it appeared we could all breathe easy after the U.S. Food and Drug Administration announced it had linked an outbreak of illness from the cyclospora parasite to iceberg lettuce sold at Taco Bell.

Now, the situation looks a bit less clear. The FDA reported that testing of lettuce from Taylor Farms, the Taco Bell supplier, resulted in a "false positive." That doesn't mean that Taylor Farms and Taco Bell are completely in the clear -- it could be that the contaminated product is already used up, since lettuce isn't known for its long shelf life -- and the FDA said it still believes it has found the culprit. But it does raise the possibility that the initial announcement was wrong.

Colorado's cyclospora cases are in line with recent years, and mostly involved people who traveled overseas. If you want to be especially careful, though, public health watchers recommend avoiding bagged salads and cooking your produce and herbs thoroughly.

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