Death reported in E. coli outbreak traced to California pumpkin patch

San Luis Obispo County public health officials confirmed Monday that a person connected to an E. coli outbreak traced to a Central Coast pumpkin patch has died, more than a week after the county had declared the outbreak investigation closed and allowed the farm to reopen.

The outbreak is linked to Brookshire Farms, a seasonal pumpkin patch in San Luis Obispo, California. Five visitors had laboratory-confirmed infections with Shiga toxin-producing E. coli O157, a severe strain of the bacteria that can cause bloody diarrhea and, in a small share of cases, life-threatening kidney failure. Ten more people who visited the farm and became ill afterward are being tracked as suspected, unconfirmed cases, bringing the total count associated with the outbreak to 15.

What county health officials found

According to the San Luis Obispo County Department of Public Health, the five lab-confirmed patients all visited Brookshire Farms on October 17 or 18. The suspected cases cover a wider window, October 16 through 26. Three children among the confirmed patients developed hemolytic uremic syndrome, a dangerous complication in which the toxin damages small blood vessels and can shut down the kidneys. The county has not disclosed the hospitalization status of all 15 people in the outbreak.

Genetic sequencing matched the bacterial strains from three of the five confirmed patients to one another; a fourth sample's results were still pending and a fifth could not be sequenced. The county said the matching strains did not closely resemble other strains already catalogued in national databases, which officials said points toward a single, uncommon source rather than a widespread contamination event. Investigators tested water, food and other environmental samples taken at the farm but did not detect E. coli O157 in any of them, though other strains of E. coli turned up in some samples. Edible corn cups, pumpkins, hay and non-potable water sources were all common among people who got sick, but none was confirmed as the point of contamination. No petting-zoo animals were accessible to the public at the farm, the county said.

Brookshire Farms voluntarily closed on October 27 as a precaution while the investigation continued. On November 6, the county announced it was winding down its investigation and said the farm could reopen, which it did the same day — according to Food Safety News, roughly five and a half hours before the county's own announcement went out. In that update, County Health Officer Dr. Christy Mulkerin said a negative environmental result "is not unexpected," since contamination on a farm is often short-lived and hard to detect after the fact, but that the clinical and epidemiological evidence still pointed to a shared, time-limited exposure among those who fell ill.

A death confirmed days after the case was declared closed

That assessment shifted Monday. Public health spokesman Tom Cuddy told local outlets that one individual associated with the outbreak had died, a development both Food Safety News and KSBY, the local ABC affiliate, reported Monday evening. The county said it was sharing the news with the family's permission and did not release the patient's age or other identifying details.

"This is truly a heartbreaking development, and our thoughts are with the family and everyone affected by this outbreak," Cuddy said, extending the department's condolences to the family and loved ones.

Neither report specified whether the death occurred among the five confirmed patients, the children who developed hemolytic uremic syndrome, or one of the ten suspected cases the county has otherwise declined to detail. The county has said no further environmental testing is planned, meaning the precise point of contamination on the farm may never be identified.

Who is affected, and the wider seasonal pattern

Public health officials have tied the illnesses to visits during a roughly ten-day window in mid-to-late October, meaning anyone who went to Brookshire Farms in that period and later developed symptoms — severe stomach cramps, diarrhea that may be bloody, and sometimes fever — is being asked to seek medical attention and mention the possible exposure, since diagnosing this particular strain requires specific laboratory tests.

The outbreak is one of several this autumn tied to agritourism attractions. In Illinois, the Will County Health Department traced a separate E. coli outbreak to a baby goat in a petting zoo at Bengtson's Pumpkin Farm in Homer Glen, after genetic testing found the animal carried a strain matching the bacteria recovered from sickened visitors; that investigation has grown to seven confirmed cases. Earlier this fall, the CDC and FDA tracked a separate, unrelated multistate E. coli and Salmonella outbreak linked to alfalfa sprouts. Public-health researchers and food-safety advocates have noted that pumpkin patches, corn mazes and petting zoos draw large numbers of young children every fall, a population especially vulnerable to the kidney complications of this particular bacterial strain.

• Hemolytic uremic syndrome develops in an estimated 5 to 10 percent of diagnosed Shiga toxin-producing E. coli cases, according to the CDC, and is most common in children under five, older adults and people with weakened immune systems.
• Warning signs of HUS include decreased urination, extreme fatigue, and loss of pink color in the cheeks and lower eyelids; the CDC advises that anyone with these symptoms seek emergency care immediately.
• Most people infected with this E. coli strain recover within five to seven days without lasting harm, but severe cases can require hospitalization, dialysis or blood transfusions.

What comes next

San Luis Obispo County's public health department says it considers its field investigation at Brookshire Farms complete and has no further environmental testing planned, even as it confirms the outbreak's first known fatality. The department has reiterated general food-safety guidance for the public: thorough handwashing after contact with farm animals or soil, washing produce before eating it, keeping raw foods separate from ready-to-eat items, avoiding untreated or non-potable water, and sticking to pasteurized milk and juice. The CDC's guidance on hemolytic uremic syndrome underscores that the complication can cause permanent kidney damage or death, and urges prompt medical evaluation for anyone who develops its warning signs after a diarrheal illness.

It remains unclear whether San Luis Obispo County will reopen any part of its inquiry in light of the death, or whether Brookshire Farms will face further scrutiny before next year's harvest season. The county has not said whether it will revisit its decision to close the investigation, and it has not released further details about the person who died.