Alfalfa sprouts linked to food poisoning cases in Minnesota and Wisconsin

Why sprouts are a frequent outbreak source

Bill Marler, a food safety attorney familiar with outbreak litigation, said the link between sprouts and foodborne illness is consistent with a well-documented pattern in the industry. "It's easy for the seeds to harbor contaminants, it's difficult to clean them, and it's easy for contaminants to spread when they are grown in warm water," Marler said. Sprouts are typically grown in warm, humid conditions that favor the growth of bacteria such as E. coli, Salmonella and Listeria.

Everything Sprouts has not publicly commented on the investigation, and the FDA has not issued a formal recall at the time of the announcement. Regulators typically weigh whether to recommend a recall based on the strength of the epidemiological evidence, the distribution footprint of the product and the ability of consumers to identify what they purchased.

Minnesota investigators have been leading the traceback effort, working with state agriculture officials and the FDA to identify the lot codes, growing facilities and shipping records associated with the implicated sprouts. Investigators in Wisconsin are contributing patient interviews and matching them against purchase data collected from grocery chains and restaurants that stocked the product.

How investigators are tracing the outbreak

Past sprout outbreaks have frequently been traced back to contaminated seed lots, which can introduce pathogens at the start of the growing process. Because seeds are rinsed, soaked and germinated in warm water, a small amount of contamination on a single seed can spread through an entire batch, multiplying the initial bacterial load.

The FDA has advised consumers in both states who purchased alfalfa sprouts from Everything Sprouts recently to discard the product and avoid eating it. People who develop symptoms of foodborne illness — including diarrhea, abdominal cramps and fever — are encouraged to contact a health care provider and report the illness to their state health department.

Consumer guidance and next steps

Food safety specialists note that sprouts carry a higher inherent risk than many other fresh produce items because of how they are grown, and they have been the source of repeated outbreaks in the United States over the past three decades. The current investigation mirrors the structure of those earlier responses: rapid case identification, traceback to the producer, and consumer guidance to prevent additional illnesses.

Calco, a distributor connected to the supply chain, has been identified in reporting as part of the distribution network, though its precise role is still being clarified by investigators. The AP has aggregated coverage of the outbreak from multiple state and federal sources.

The FDA and state agencies are expected to provide updated case counts and laboratory findings in the coming days. If a specific pathogen is confirmed through patient testing, that information will guide further consumer warnings and any subsequent enforcement actions against the producer.

For now, the agencies involved are urging residents in both states to check their refrigerators for recently purchased alfalfa sprouts and to dispose of any product sourced from Everything Sprouts until the investigation is closed.