lettuce

Aug. 6 (UPI) — The cyclosporiasis outbreak in Michigan has begun to slow as health officials say people can resume taking normal precautions when consuming lettuce and salad greens.

The Michigan Department of Health and Human Services announced Thursday that Michiganders can “resume routine guidance” for lettuce and salad greens.

MDHHS has lifted its recommendation to avoid bagged salad mixes.

Michigan has been a hotspot in the cyclosporiasis outbreak, reporting 12,485 cases since June.

“Since the start of this outbreak, MDHHS has remained committed to providing timely, transparent information and clear recommendations to Michigan residents,” Dr. Natasha Bagdasarian, the agency’s chief medical executive, said in a statement. “As new data has emerged, our guidance has evolved to reflect the best available evidence, helping ensure that prevention recommendations are accurate, actionable and responsive to the changing situation.”

The department said most exposures to cyclosporiasis occurred in late June or early July. On average, people exposed to cyclosporiasis begin feeling sick about seven days after exposure but can begin observing symptoms up to 14 days after exposure.

MDHHS adds that the “majority of the contaminated produce is likely no longer available for consumption.”

Cyclosporiasis is a parasitic infection that can cause sudden, watery diarrhea, vomiting, nausea, loss of appetite and fatigue. The outbreak first spread in Michigan and Ohio before reaching a total of 15 states.

The source of the outbreak has been traced to lettuce sourced from Taylor Farms de Mexico. Its lettuce is sold in grocery stores around the United States and restaurants including Taco Bell.

July 20 (UPI) — Taylor Farms said late Sunday the Trump administration mistakenly informed it that a sample of its shredded iceberg lettuce tested positive for a parasite amid a multi-state outbreak that prompted the U.S.-based fresh-produce giant to initiate a recall of the salad staple distributed to 27 states.

The Food and Drug Administration reversed the finding Sunday, determining that the purported positive test for the microscopic Cyclospora parasite, which causes the intestinal illness cyclosporiasis, was a false positive.

“Today, FDA apologized to us,” the company said in a statement.

“Today, we were informed that FDA made a mistake.”

Taylor Farms had initiated the voluntary recall Friday after federal health investigators linked shredded iceberg lettuce sourced from central Mexico to a multi-state cyclosporiasis outbreak through a traceback investigation.

At least 1,644 people in five states have been infected, including 94 hospitalizations, since May 13, according to the U.S. Centers for Disease Control and Prevention, which said there have been no fatalities.

Federal health investigators have linked the illnesses to shredded iceberg lettuce served at Taco Bell locations in Indiana, Kentucky, Michigan, Ohio and West Virginia.

The FDA said Friday that its traceback investigation identified the supplier as Taylor Farms de Mexico. The company then initiated the voluntary recall.

On Saturday, federal investigators said a sample collected during targeted import surveillance tested positive for Cyclospora. The FDA said the produce was not part of the initial recall and investigators were working to identify whether any of the lot was available in commerce.

A day later, Taylor Farms said it was informed of the FDA’s “mistake.”

“To be clear, at this moment, the FDA has not identified a single positive product test result for Cyclospora,” it said.

The FDA told media it had discovered the false positive after rechecking the results of the purported positive sample.

“As of July 19, 2026, there are no confirmed positive sample results for product testing for Cyclospora,” the FDA said in a statement, NBC News reported.

Taylor Farms said it had completed the voluntary recall, which was limited to iceberg lettuce grown and processed in central Mexico, and that all of its other produce is available for purchase.

“Our thoughts remain with everyone who has fallen ill in this outbreak,” it said.

“We are committed to working with public health authorities as the ongoing outbreak investigation continues.”

July 17 (UPI) — Taylor Farms announced Friday it is removing all iceberg lettuce sourced from central Mexico from the U.S. market, after federal officials said they traced the cyclosporiasis outbreak that’s caused illness in thousands of people to lettuce supplied to Taco Bell restaurants in five states.

The U.S. Centers for Disease Control and Prevention and the Food and Drug Administration said their investigators found the shredded iceberg lettuce came from Taylor Farms, a supplier that also sells salad kits in grocery stores.

In a statement, the company said it is voluntarily removing all of its Mexico-sourced iceberg lettuce, adding the outbreak is not associated with any of its salad kits.

“While the FDA traceback is indicating a specific independent farm that represents less than 1% of the U.S.’s iceberg lettuce supply as the potential source of the outbreak, we have removed all iceberg lettuce from the region indefinitely,” the company statement said.

The CDC’s website says not to eat “shredded iceberg lettuce served at Taco Bell locations in Indiana, Kentucky, Michigan, Ohio and West Virginia.”

More than 1,600 people have been confirmed ill with the bug.

The agencies did not name a supplier, but two people familiar with the inquiry told The Washington Post that investigators have identified Taylor Farms as the supplier.

“The investigation remains active, and additional states, restaurants, retailers or products may be identified as more information becomes available,” said Emily Hilliard, a spokesperson for the Health and Human Services Department.

“The signal we have gotten is that there is a very high percentage of people who got sick at Taco Bell, and when investigators asked what their menu items were in common, lettuce came up frequently,” one person familiar with the investigation said.

“Based on ongoing conversations with public health officials, and out of an abundance of caution, Taco Bell has taken immediate action to voluntarily remove potentially impacted lettuce from a supplier in select states,” Taco Bell Corp. said in a statement. “The affected ingredient from our supplier is being indefinitely removed from our supply chain nationwide and will be replaced within 24 hours in select states.”

Taylor Farms is a leading global producer of salads and healthy fresh foods, with production facilities across the United States, Canada, Mexico and Western Europe. The company has been linked to several outbreaks.

In November 2024, onions from Taylor Farms were tainted with E.Coli and sold at McDonald’s stores via Quarter Pounders burgers. About 100 people in 14 states were sickened. In December 2015, 19 people in 18 states were sickened with E. Coli after eating tainted celery supplied by the company to grocery stores. In August 2013, salad kits from Taylor Farms grown in Mexico were recalled after more than 360 people in Texas, Iowa and Nebraska became ill with cyclosporiasis. In February 2013, Taylor Farms recalled organic baby spinach products sold in 39 states for potential E. coli contamination, though there were no reports of illness.