Cyclospora Outbreak Update: Taylor Farms Pulls Mexican Iceberg Lettuce as FDA Walks Back a Positive Test

The Cyclospora outbreak we've been tracking on this blog has grown substantially, and there's a significant new development this week involving one of the country's largest lettuce suppliers.

What's new

On July 19, 2026, the FDA said a lettuce sample supplied by Taylor Farms de Mexico — previously reported as testing positive for Cyclospora as part of the ongoing multistate outbreak — has now been determined to be a false positive.

Separately, Taylor Farms de Mexico is voluntarily removing all iceberg lettuce sourced from central Mexico from its supply chain. That move follows an FDA investigation linking shredded iceberg lettuce served at Taco Bell locations in Indiana, Kentucky, Michigan, Ohio, and West Virginia to the outbreak, which has now sickened 1,644 people.

Why the false-positive detail matters

It's worth reading these two headlines together rather than in isolation. A voluntary recall is a precaution, not an admission that a specific product caused illness — and a false-positive lab result doesn't clear a supplier either. Cyclospora testing is notoriously difficult: the parasite evades standard tests, and confirmatory results can take time. Treat this as an evolving investigation, not a closed case. As of this writing, the FDA has not named a single confirmed source for the outbreak overall; the Taylor Farms lettuce recall is a precautionary supply-chain move tied to the Taco Bell traceback, not a final determination.

The bigger picture

This is the same Cyclospora outbreak we've covered in earlier updates: 145 U.S.-acquired cases across 17 states as of a mid-June CDC count, growing to over 700 confirmed cases in Michigan alone by mid-July, with investigators believing lettuce or salad mixes were the likely source even before any supplier was named. The case count of 1,644 reflects how much larger this outbreak has become since our last post.

What this means for Miami kitchens

Iceberg lettuce and shredded lettuce blends show up constantly in Miami kitchens — tacos, sandwiches, salads, garnishes. If your restaurant, food truck, or catering operation sources iceberg lettuce from Mexico, now is the time to:

• Ask your produce supplier directly whether any of their iceberg lettuce is sourced from Taylor Farms de Mexico or from central Mexico, and get it in writing.

• Hold off on serving shredded iceberg lettuce from unconfirmed sources if you have any doubt about origin, until your supplier can confirm.

• Keep documentation — invoices, lot numbers, and supplier confirmations — in case this traceback expands.

• Remind staff that thorough washing helps but doesn't guarantee Cyclospora removal; sourcing from confirmed, reputable suppliers is still your best defense.

• Watch for symptoms — prolonged watery diarrhea is the hallmark sign — and keep any employee with those symptoms off food-handling duties until cleared by a doctor.

How Safe Food Handler Miami can help

For more than 25 years, Safe Food Handler Miami has trained restaurants, food trucks, hotels, caterers, and corporate kitchens across Miami-Dade on the practices that catch problems like this before they become outbreaks — supplier verification, proper produce handling, and employee illness policies included. Our bilingual (English and Spanish) Food Handler and Food Safety Manager certification programs are Florida-approved and available in person.

Ready to certify or recertify your team? 📞 305-341-3480 | safefoodhandlermiami.com

This update was prepared by SafeFoodHandler Miami based on reporting from Food Safety News and public information from the FDA and CDC. It is for general educational purposes and is not medical or legal advice.