frozen blueberries recalled

Frozen Blueberries Recalled Across Four States Due to Listeria Risk: What California Consumers Need to Know

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Published February 26, 2026 | Updated February 27, 2026

A major food safety scare has gripped grocery aisles across the United States this week, as nearly 60,000 pounds of frozen blueberries were recalled in four states following a confirmed link to Listeria monocytogenes — a dangerous bacteria that can cause life-threatening illness, especially among pregnant women, newborns, older adults, and individuals with weakened immune systems.

The recall, issued by the U.S. Food and Drug Administration (FDA), affects frozen blueberry products distributed under multiple brands, prompting widespread concern among Californians who rely heavily on frozen fruit for smoothies, baking, and healthy snacking.

Here’s what you need to know about the recall, its scope, and how to protect yourself and your family.

Main Narrative: A Serious Threat Emerges from the Freezer Aisle

On February 25, 2026, the FDA classified the frozen blueberry recall as a “Class I” event — the most severe risk level, indicating a reasonable probability that exposure to the contaminated product could cause serious adverse health consequences or death.

The recall involves approximately 59,000 pounds of frozen blueberries processed by SunOpta, Inc., a Canadian-based company with operations in California and other states. The affected batches were shipped to retailers and distributors between January 2026 and early February 2026 and are believed to have reached stores in Arizona, Colorado, Nevada, and California.

According to verified reports from People.com, Fox Business, and USA Today, the contamination was discovered during routine environmental testing at a SunOpta processing facility in California. Subsequent trace-back investigations revealed that the same production line had produced multiple lots of frozen blueberries, all of which tested positive for Listeria monocytogenes.

“This is not a minor inconvenience,” said Dr. Elena Martinez, an epidemiologist at UC Davis Health. “Listeria can survive in cold environments like freezers and refrigerators, making it particularly insidious. Even after freezing, the bacteria can remain viable and pose a serious threat if the product is thawed and consumed without proper handling.”

Consumers who purchased the affected products are urged to immediately stop using them and return or discard them. No illnesses have been officially reported yet, but public health officials warn that symptoms may take up to 70 days to appear, complicating timely detection.

Recent Updates: Timeline of the Recall and Response

The recall unfolded rapidly over a 48-hour period, beginning late Tuesday afternoon when internal test results flagged contamination in a batch of frozen blueberries destined for California markets.

Below is a chronological breakdown of key events:

• February 24, 2026: Internal quality control at SunOpta’s facility in Watsonville, California, detects Listeria monocytogenes during routine swab testing of equipment in the blueberry processing line.
• February 25, 2026: SunOpta initiates a voluntary recall after confirming contamination in multiple production runs. The FDA issues a public alert, classifying the recall as Class I.
• February 25, 2026 (evening): Major retailers including Costco, Safeway, and Walmart issue shelf recalls and remove affected products from shelves in Arizona, Colorado, Nevada, and California.
• February 26, 2026: The FDA expands the recall scope after discovering additional contaminated lots linked to the same production line. Affected products include private-label brands such as “Safeway Select Frozen Blueberries” and “Costco Kirkland Signature Organic Wild Blueberries.”
• February 27, 2026: SunOpta announces plans for a full facility deep-cleaning and temporary suspension of blueberry processing. The company also confirms cooperation with the FDA and state agricultural agencies.

In response, the California Department of Public Health (CDPH) issued a statement urging consumers to check product labels and contact retailers for refunds or returns. “We are working closely with the FDA and industry partners to ensure swift removal of these products from the supply chain,” said CDPH spokesperson Maria Lopez.

Contextual Background: Why Frozen Blueberries Are Under Scrutiny

Frozen blueberries are a staple in American households — particularly in California, where demand for convenient, nutrient-rich foods has surged in recent years. According to the California Blueberry Commission, the state produces over 100 million pounds of blueberries annually, much of which is sold fresh, but a growing segment is also processed into frozen goods for national distribution.

SunOpta, one of the largest processors of organic and conventional frozen berries in North America, supplies products to major retailers, meal kit services, and private-label brands across the country. While the company maintains high food safety standards, this recall marks the third significant berry-related contamination incident involving SunOpta in the past five years.

Previous incidents include:

• 2021: A salmonella outbreak linked to frozen mango slices processed by SunOpta led to a 12,000-pound recall and a temporary shutdown of the facility.
• 2023: Another Listeria detection in frozen mixed berries resulted in a regional recall affecting three Western states.

These recurring issues have raised questions about industry-wide practices in berry processing, particularly in facilities where raw agricultural products undergo minimal cooking — a known vulnerability for pathogens like Listeria.

Dr. James Chen, a food safety expert at Stanford University, explains: “Berries are often grown in soil and water where Listeria can naturally occur. Because they’re rarely cooked before consumption — whether fresh or frozen — even small contamination levels can become dangerous, especially in vulnerable populations.”

Regulatory oversight has increased since the 2018 Salmonella outbreak linked to frozen coconut flakes, which prompted the FDA to revise its Produce Safety Rule and strengthen monitoring of high-risk imported and domestic produce.

Yet, as this latest recall demonstrates, gaps remain — particularly in traceability and real-time contamination detection.

Immediate Effects: Impact on Consumers, Retailers, and the Supply Chain

The recall has sent ripples through grocery supply chains, especially in California, where frozen blueberries are a top-selling item in the produce section. Retailers have reported a 15–20% drop in sales of private-label frozen berry products in the past 48 hours, according to industry analysts at NielsenIQ.

“Consumers are understandably concerned,” said Lisa Tran, a shopper at a Whole Foods Market in San Francisco. “I buy frozen blueberries every week for my kids’ smoothies. When I heard about the recall, I went straight to the store to check the labels — it’s scary how easily something you trust daily can become unsafe.”

Retailers are scrambling to manage inventory, communicate with customers, and coordinate with suppliers. Some stores have posted signs near the produce aisle warning shoppers about the recall, while others have offered full refunds for returned items.

Economically, the recall could cost SunOpta and its retail partners millions in lost revenue, damaged brand reputation, and operational downtime. The company’s stock price dropped 7% in after-hours trading on February 26, reflecting investor concerns over regulatory scrutiny and potential litigation.

Moreover, the incident highlights broader vulnerabilities in the global food system. Many of the frozen blueberries involved in the recall were sourced from Mexican farms and processed in California before distribution. This cross-border supply chain complicates rapid response efforts and increases the risk of undetected contamination.

Public health officials are also bracing for potential outbreaks. While no cases have been linked to this recall yet, the long incubation period of listeriosis means surveillance must remain vigilant.

Future Outlook: What’s Next for Food Safety and Consumer Trust?

As the investigation continues, several critical developments are expected in the coming weeks:

1. Expanded Testing and Traceability Measures: The FDA has announced plans to conduct unannounced inspections at all SunOpta facilities and increase sampling of frozen berry products nationwide. New genomic sequencing tools will be used to trace contamination sources more precisely.

2. Policy Reforms: Advocacy groups like the Center for Science in the Public Interest (CSPI) are calling for mandatory pasteurization of all frozen berries — a controversial but increasingly discussed measure. Currently, only a small percentage of frozen berries undergo heat treatment.

3. Consumer Education: Public awareness campaigns are being developed to teach safe handling of frozen produce, including proper storage, thawing procedures, and signs of spoilage.

4. Industry Accountability: Legal experts predict potential class-action lawsuits against SunOpta, though any litigation could take months or years to resolve.

For California consumers, the message is clear: stay informed, verify product labels, and support brands with transparent sourcing and strong safety records.

“Transparency is key,” says Dr. Martinez. “When companies act swiftly and openly