Health and Human Services Secretary Robert F. Kennedy Jr. announced at a July 21, 2026 press briefing that the cyclosporiasis outbreak is "under control," crediting source identification through epidemiological forensics and a recall carried out by the companies involved (The Guardian).

Cyclosporiasis is an intestinal illness caused by the parasite Cyclospora cayetanensis. People become infected by consuming food or water contaminated with the parasite.

The announcement came one day after the FDA reversed a 27-state recall of shredded iceberg lettuce supplied by Taylor Farms, telling the company the positive cyclospora result had been a "false positive." The false positive originated from a rapid screening test used on a lettuce sample checked at a border-surveillance point and was identified through routine quality-control procedures (AP News; Reuters). The FDA stated that the false-positive result does not change the ongoing Taylor Farms cyclospora investigation (Reuters.

The recall moved quickly. On July 17, the FDA initiated a recall of shredded iceberg lettuce served at Taco Bell locations in Indiana, Kentucky, Michigan, Ohio, and West Virginia. That same day, Taylor Farms de México announced it was voluntarily removing all iceberg lettuce sourced from central Mexico (FDA). On July 18, the FDA expanded the recall to 27 states, including products sold at retail establishments such as Walmart. By July 19, FDA scientists re-checked the recalled products and informed Taylor Farms the agency had made a mistake.

The scale of the outbreak complicates the "under control" framing. As of July 21, 34 states had reported cyclosporiasis cases, with the Midwest heavily impacted, according to the CDC. The CDC's most recent national data as of mid-July reported more than 1,600 confirmed cases and 5,100 pending cases. Michigan alone reported more than 6,571 cases as of July 21 (The Guardian).

Experts have widely criticized the CDC's response to the outbreak as slow, characterizing it as the predictable outcome of severe personnel and programmatic cuts made by the Trump administration. The administration cut $11.4 billion in pandemic-era grants to state and local health departments, funding that had built out capacity to investigate outbreaks. It also fired roughly one-quarter of the CDC's workforce. A federal lab dedicated to detecting parasitic outbreaks was reduced from 11 staffers to three, and its head resigned. The FoodNet surveillance program — a CDC system that tracks foodborne illnesses — was cut from tracking eight pathogens to two, shiga-toxin producing E. coli and salmonella, making cyclospora surveillance optional (The Guardian).

The FDA published an official outbreak investigation page titled "Investigation of 5-State Outbreak of Cyclospora Illnesses" in mid-July, specifically linking the outbreak to iceberg lettuce (FDA). That page was published July 18, the same day the recall was expanded to 27 states.

The broader context here is a food safety infrastructure operating under compounding constraints. The false positive on the border-surveillance sample forced an abrupt recall reversal that touched 27 states and major retail chains, then was retracted within 48 hours. That sequence raises questions about the reliability of rapid screening at import points, particularly when confirmatory capacity has been reduced. The cutback of the parasitic-disease lab from 11 staff to three means fewer specialists available to validate preliminary results or conduct the kind of epidemiological forensics Kennedy referenced at his briefing.

Michigan's case count alone exceeds 6,571, a figure substantially higher than the CDC's national confirmed-case total of 1,600-plus. That disparity likely reflects the difference between state-level reporting, which may include probable and clinical cases, and the CDC's stricter confirmed-case classification. The 5,100 pending cases nationally suggest the true case count will continue to climb as diagnostic backlogs clear.

Cyclospora cayetanensis is a parasite historically difficult to trace through food supply chains, in part because it cannot be grown in laboratory cultures and because contamination is often sporadic rather than uniformly distributed across a product lot. The optional status of cyclospora surveillance under the revised FoodNet program means that detection now depends on individual state capacity and initiative, capacity that the $11.4 billion in grant cuts directly eroded.

The FDA's assertion that the false positive does not change the ongoing investigation sits in tension with the recall reversal. If the iceberg lettuce from Taylor Farms was not the vehicle, the investigation must identify another source, even as Kennedy declares the outbreak controlled. The 34-state footprint and the volume of pending cases indicate the outbreak is still actively generating illnesses, not merely residual reports from past exposures.