A gastrointestinal illness caused by a microscopic parasite has now sickened nearly 3,000 people across 31 states, sent at least 86 to the hospital, and left federal health authorities without a confirmed source of contamination, weeks into an outbreak that has overwhelmed testing labs and exposed gaps in the government's food-safety surveillance.
The disease is cyclosporiasis, caused by the cyclospora parasite. It spreads through contaminated fresh produce, clings to fruit and vegetable surfaces in ways that are difficult to rinse away, and triggers severe watery diarrhea, cramping, bloating, nausea, and fatigue that can last for weeks. No deaths have been reported. But the scale of this outbreak, and the federal government's inability to pinpoint its origin, raises hard questions about whether Washington scaled back the wrong surveillance program at the worst possible time.
Michigan has been hit hardest. The state reported 1,562 cases as of Friday, with at least 36 hospitalizations, NBC News reported. In a typical year, Michigan sees 40 to 50 cyclosporiasis cases. This year's count is more than 30 times that figure, and still climbing.
Dr. Natasha Bagdasarian, Michigan's chief medical executive, described the surge as "highly unusual." State laboratories are now racing to sequence the genome of the cyclospora parasite to determine whether the cases share a common origin.
"We can see if isolates are closely related, meaning that there was likely a common source, and then we can potentially go back and look for the source of that contamination."
The outbreak is concentrated in Michigan's southeast corner, bordering northwest Ohio, a geographic cluster that suggests a shared food supply chain. Breitbart reported that Dr. Bagdasarian stated plainly: "There is clearly a linked outbreak happening right now."
Ohio's numbers tell a similar story. The Ohio Health Department listed 177 cases with 28 hospitalizations as of July 2. The Toledo-Lucas Health Department, covering the northwest Ohio border region closest to Michigan's outbreak cluster, reported 306 cases in the past week alone. Whether Toledo-Lucas's count overlaps with or is separate from the statewide Ohio figure remains unclear.
New York has reported 394 cases. Illinois logged 141. Colorado, North Carolina, Texas, and Wisconsin have all reported infections as well, though specific case counts for those states have not been published.
An NBC News tally of state health department data put the nationwide total at 2,912 cases reported or confirmed. The CDC, for its part, has confirmed 843 cases acquired domestically and said it is investigating more than 1,500 additional cases. The gap between the CDC's confirmed count and the state-level tallies is itself a data point worth noting.
The speed of the outbreak's growth has been striking. Just The News reported that Michigan's confirmed cases exploded from 170 on June 22 to 992 in a matter of weeks. Earlier in the outbreak's trajectory, Fox News reported that the CDC had documented 145 confirmed cases across 17 states as of mid-June, with the agency noting at the time that "there is currently no evidence of a single, multistate Cyclospora outbreak linking all cases." That was before the numbers multiplied roughly twentyfold.
Despite the scale of the outbreak, no food product has been identified as the source. No recalls have been issued. The FDA said Friday it was "actively engaged" with state partners, language that conveys motion without specifying action.
State and local health departments are interviewing patients and analyzing grocery receipts, trying to identify a common food product. But the parasite's biology makes that detective work difficult. Symptoms typically appear about a week after exposure, meaning patients are often trying to recall meals from seven or more days earlier.
Dianna Blau, acting chief of the CDC's Parasitic Disease Branch, acknowledged the challenge:
"In an average year, there's a small proportion of cases that actually get traced back to one particular food item."
That is not a reassuring track record for an agency asking the public to trust the process.
Driscoll's, the nation's largest berry supplier, told NBC News that health authorities have not contacted it regarding any connection to the rising cases. That detail stands out. If investigators cannot even narrow the field enough to contact the country's dominant berry company, a product category historically linked to cyclospora, it suggests the investigation is still in its earliest stages, even as the case count approaches 3,000.
Here is where the story gets uncomfortable for federal health officials. In July of last year, the CDC made tracking cyclospora optional as it scaled back its Foodborne Diseases Active Surveillance Network, known as FoodNet. That decision, made quietly, without fanfare, meant the federal government was doing less monitoring of exactly the kind of parasite now ripping through 31 states.
Blau stated there has been no difference in how cyclosporiasis cases are reported to or handled at the agency in recent years. Donald Schaffner, a food microbiology professor and department chair at Rutgers University, was less sanguine.
"Could we have learned earlier? Could we be finding out more?"
Schaffner added bluntly: "We need to be doing more to track these."
The question is straightforward. If the CDC had not made cyclospora tracking optional, would the outbreak have been detected sooner? Would investigators be further along in identifying the contaminated product? Blau's assurance that nothing has changed procedurally does not answer the more pointed question of whether the reduced surveillance left a blind spot during the exact months, May through August, when cyclospora cases historically peak.
Melanie Firestone, a University of Minnesota foodborne illness researcher, told Newsmax that "there is a lot of underreporting when it comes to this." If the reported number is nearly 3,000, the actual number of Americans sickened could be substantially higher.
The CDC reported 86 hospitalizations nationwide. Michigan alone accounts for 36 of those. Ohio's health department reported 28. The primary driver of hospitalization is severe dehydration from prolonged diarrhea, a complication that hits the elderly and immunocompromised hardest.
Blau noted that on average, 10 percent of cyclosporiasis patients require hospitalization. At nearly 3,000 cases, that math implies the hospitalization count will continue to rise. Testing turnaround times, normally about 24 hours, have stretched to two or three days in some areas as labs strain under demand.
The illness is treatable with antibiotics and is not usually life-threatening. But "not life-threatening" is cold comfort to patients enduring weeks of debilitating symptoms while investigators still cannot tell them what food made them sick, or whether it is still on store shelves.
Health officials are offering practical advice, though it comes with caveats. The cyclospora parasite is not easily washed off produce. Janet Buffer, senior institute manager at the Institute for Food Safety and Nutrition Security at George Washington University, recommended that consumers "agitate the surface vigorously" when washing fruits and vegetables, but cautioned against using dishwashing soap.
Michigan's health department suggested cooking raspberries when possible, an acknowledgment that rinsing alone may not eliminate the risk. The parasite is not spread person-to-person, which rules out the kind of rapid community transmission seen with viruses. But it also means every new case points back to a contaminated food product that has not been identified.
Schaffner, for his part, urged Americans not to abandon fresh produce:
"We know that fresh produce is part of a healthy diet. We know that cyclospora cases peak between May and August, which is also prime fresh produce eating season. I can tell you that I'm not going to change my consumption habits."
That is sensible advice from a food scientist. But it does not absolve the agencies responsible for keeping the food supply safe.
Last year, approximately 2,700 cyclosporiasis cases were reported nationally. This year, we are already past that number, and it is only mid-July. The outbreak is still growing. The source remains unknown. The FDA has issued no recalls. And the CDC scaled back the very tracking program designed to catch outbreaks like this one.
None of this happened in a vacuum. Federal agencies made choices about resource allocation and surveillance priorities. Those choices have consequences. Nearly 3,000 Americans are now living with those consequences, and the number grows daily.
When the government quietly downgrades its own early-warning systems and then cannot explain where a nationwide outbreak came from, taxpayers deserve more than "actively engaged." They deserve answers.
