The ongoing salmonella outbreak in Canada, connected to pistachio products, continues to affect consumers more than a year after the first cases emerged. Since early March 2025, a total of 189 illnesses have been reported, predominantly in Ontario and Quebec. Public health officials are grappling with the complexities surrounding the outbreak, which remain challenging to control.
Complexity of the Outbreak
April Hexemer, Director of the Outbreak Management Division at the Public Health Agency of Canada (PHAC), highlighted several factors contributing to the persistence of the outbreak. The extended shelf life of pistachios, their widespread distribution, and the intricate supply chains involved have all created a scenario that complicates containment efforts. “It is an unusual outbreak in many ways,” Hexemer stated, noting the rarity of such prolonged incidents, particularly after the source has been identified.
In December, the Canadian Food Inspection Agency (CFIA) confirmed that the implicated pistachios were imported from Iran, although no specific crop has been definitively linked to the outbreak. As a precaution, the CFIA implemented a temporary ban on imports of pistachios and products containing them from Iran last September.
The Role of Supply Chains
The intricate nature of the supply chain for pistachios has further complicated the situation. Hexemer pointed out that these nuts are often incorporated into a variety of products, from pastries to chocolate bars, making it difficult to trace the source of contamination. “Pistachios are very popular now and they are being used in a lot of products,” she remarked.
As the investigation into newer cases continues, health officials have reiterated the importance of consumer vigilance. “Our advice at this time remains unchanged: we’re asking people to not eat or use or serve the products that have been recalled,” Hexemer emphasised.
Continuing Investigations and Recommendations
Since the last update in March, PHAC has confirmed an additional 11 lab-reported cases. Hexemer also indicated that for every confirmed case, approximately 26 remain unreported, underlining the potential scale of the outbreak. To date, 26 individuals have been hospitalised, but fortunately, no fatalities have been recorded.
The CFIA is actively conducting its own food safety investigation, which commenced with the Habibi brand of pistachio kernels on July 24. The agency issued warnings to retailers and food service operators regarding the possible presence of salmonella in imported pistachios from Iran, urging them to consult recall lists and discard any potentially contaminated products.
Businesses have also been cautioned against relying on dry heat methods, such as roasting, to eliminate salmonella, as the bacteria can survive in high-fat, low-moisture environments like those found in pistachios.
Recalled Products and Consumer Awareness
Since the initial recall in July, hundreds of pistachio products have been withdrawn from the market. The CFIA consolidated its recall list on November 12 due to the sheer number of affected items. Between July and November, there had been about 46 recall warnings and 22 notifications, followed by an additional 344 product recalls from November to March 16.
Despite the ongoing nature of this outbreak, Hexemer remains optimistic that it will eventually come to a conclusion. “In my experience, all outbreaks do come to an end,” she reassured. “We are just working to collect that evidence to help us to know what is the next thing that we need to do to bring this to an end.”
Why it Matters
The protracted salmonella outbreak linked to pistachio products underscores significant challenges in food safety management and public health responses. As Canadians remain at risk, the situation highlights the need for rigorous supply chain oversight and consumer education about food safety. The complexities of food distribution and the popularity of certain products can easily lead to widespread health concerns, making it imperative for regulatory bodies to act swiftly and transparently in protecting public health.
