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We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com. Back to Healio Key takeaways: Wedding guests drank water from a springhouse with a broken roof and a nonworking UV treatment unit. Around a quarter of the attendees came down with a gastrointestinal illness. Attendees at a wedding in Pennsylvania last year were sickened with a bacterial illness that investigators linked to untreated water from a spring contaminated with animal feces. At least one guest tested positive for campylobacteriosis \u2014 a gastrointestinal illness caused by Campylobacter jejuni \u2014 and more than 20 additional attendees experienced similar symptoms, according to a summary of the investigation published in the CDC\u2019s Morbidity and Mortality Weekly Report.
Wedding guests were sickened by untreated spring water contaminated with Campylobacter jejuni bacteria. Image: CDC\/R.E. Weaver, MD, PhD
Investigators linked the outbreak to an on-site springhouse with a broken roof and a kitchen UV treatment unit that had not been working for at least 2 months prior to the June 2025 ceremony in York County, which was attended by around 80 people. Campylobacter is the most common cause of bacterial diarrheal illness in the United States, leading to around 1.9 million infections per year, according to the CDC. Undercooked poultry is the most common source, but outbreaks have been linked to consumption of raw milk, untreated water, seafood and produce. The bacterium packs an unusually strong punch. According to the CDC, \u201ca single drop of juice from raw chicken can contain enough Campylobacter to cause an infection.\u201d Campylobacter infection causes symptoms consistent with other gastrointestinal illnesses \u2014 diarrhea, fever, cramps \u2014 but can also cause bloody diarrhea and more lasting conditions, such as irritable bowel syndrome, arthritis and nerve damage, according to the CDC. Young children, older adults and people with weakened immune systems are at higher risk for infection and serious disease, the CDC notes. Health officials in Pennsylvania contacted the CDC for help with the investigation after one attendee tested positive for Campylobacter and others reported symptoms. Investigators found that wedding guests were served untreated spring water from a tap after the venue ran out of bottled water, and that the same water was used for food preparation. The venue had replaced a broken UV water treatment system since the wedding ceremony, so investigators were unable to culture Campylobacter from any of the water samples they took. But testing did detect Campylobacter DNA from tap and spring water, and there was other evidence of fecal contamination at the spring. The springhouse\u2019s broken roof allowed \u201centry of debris and animal feces,\u201d the investigators wrote. The spring was located near a chicken coop and an area where horses were kept, but investigators were unable to determine where the fecal contamination originated. According to the report, the wedding venue took several steps to prevent future outbreaks, including fixing the roof of the springhouse and installing water filters. \u201cPrivate springs are largely unregulated in the United States, and, in the absence of visible contamination, users might assume such water is safe,\u201d the investigators wrote. \u201cThese findings suggest that timely environmental testing paired with epidemiologic investigation could improve source attribution and guide the development and implementation of remediation efforts at venues serving the public,\u201d they wrote. \u201cRoutine inspection and maintenance of untreated private water sources might reduce the risk for waterborne outbreaks.\u201d Published by: Ask a clinical question and tap into Healio AI’s knowledge base.
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