RFK Says Parasite Outbreak Is 'Under Control.' Michigan Has 6,571 Cases.

What We Know, and What We Really Don't

The FDA has linked the outbreak to shredded iceberg lettuce processed at a Taylor Farms facility in central Mexico. The parasite is cyclospora, and it causes severe diarrhea, among other miseries. Taylor Farms voluntarily recalled all iceberg lettuce grown and processed in central Mexico last Friday, and has stopped sourcing from that region for the rest of the growing season.

The recalled product went to Taco Bell locations in Indiana, Kentucky, Michigan, Ohio, and West Virginia, plus selected Walmart locations nationwide under the Marketside brand. So we are talking about some of the most routine, accessible food in the country. The iceberg lettuce on your fast food taco. The bag in your grocery cart.

Here is where the story gets uncomfortable. According to NBC News, no samples from the Taylor Farms facility have actually tested positive for cyclospora. The FDA announced a positive result over the weekend that turned out to be a false positive. Their own lab caught the error on quality review. That is not exactly the confidence-inspiring track record you want in the middle of a foodborne illness outbreak.

Mexico Says: Not Us

While the FDA is pointing fingers at a facility in central Mexico, Mexico is pointing right back. Mexico's own health secretary, David Kershenobich, said Tuesday at a news conference that his country's investigation had found no evidence the outbreak originated there. That is a direct contradiction from the government with the most access to the actual site in question.

This is where the science gets genuinely complicated, and it is worth being honest about that. Cyclospora is notoriously hard to trace. The parasite requires highly sensitive tests to detect in food samples, and people can fall ill weeks after eating contaminated products. By the time an outbreak is identified and officials start testing, the food is often long gone. Scientists rely heavily on epidemiological data, meaning they look at who got sick and what they ate, rather than waiting for a confirmed positive sample.

FDA Commissioner Kyle Diamantas told Fox News on Tuesday that the evidence 'strongly supports' Taylor Farms as the source, which is a different thing than what Kennedy said. 'Strongly supports' is scientific hedging. 'We've identified the source' is a press conference claim. These are not the same statement.

The Michigan Number Should Be Stopping You Cold

Let's sit with 6,571 for a second. That is the case count in Michigan alone, as of Tuesday, per the Michigan Department of Health and Human Services. Cases linked to the outbreak were still being identified as recently as last week, which is why FDA's Diamantas said Monday on a media call that it was 'imperative' to act and keep contaminated product off shelves.

And yet Michigan's own health department posted on its website that other food items cannot be ruled out as potential sources, and that 'no specific type of produce, grower, or supplier has been identified as the source.' That language is on their official site. At the same time, the federal Health Secretary is on camera saying they have done 'extensive forensics' and identified the source. The state and federal governments are not telling the same story here.

About Those Surveillance Cuts RFK Says Didn't Happen

Here is a fun one. Kennedy pushed back Tuesday against criticism that federal agencies cut back on cyclospora surveillance, saying the criticisms were 'invalid' and there were 'no cuts in our surveillance program.' Then he immediately acknowledged cutting the FoodNet program, which is the CDC program that helps states actively monitor for foodborne illnesses like cyclospora. His explanation was that the FoodNet cuts were for 'redundant surveillance.'

According to NBC News, the CDC told 10 states a year ago that they no longer had to actively monitor for cyclospora through FoodNet. That is not redundancy elimination. That is reduction. Food safety experts are now telling NBC News that without active surveillance, many cases go entirely uncounted.

Barbara Kowalcyk, director of the Institute for Food Safety and Nutrition Security at George Washington University, put it plainly: 'What we've been doing is pulling pieces out of the puzzle, and it's going to make it really hard for us to figure out what the cause of this outbreak is.' She added it would make it harder to see trends over time. The people whose job it is to understand food safety outbreaks are telling you directly that the tools to understand this one have been weakened. Kennedy told you those concerns are invalid.

What Investigators Are Actually Doing

Keith Schneider, a food safety professor at the University of Florida, told NBC News that the FDA is almost certainly testing well beyond just the lettuce at this point. Irrigation water, soil samples, and workers associated with the specific fields that supplied product during the relevant window are all likely in scope.

That is a serious, painstaking investigation. It takes time. It requires resources. It requires the kind of sustained, coordinated surveillance infrastructure that the current administration has been quietly dismantling in the name of eliminating redundancy. Several state health departments told NBC News they are still reporting cases to the CDC through local labs and health departments, but experts are clear that passive reporting catches far fewer cases than active monitoring does.