Salmonella outbreaks – More than 30 U.S. states have reported at least one Salmonella illness in 2026, with infections linked to outdoor poultry and a separate wave of broad recalls tied to Salmonella-contaminated powdered milk used in snack seasonings. Experts say a mix of improved
For the third time this year, the pattern has felt familiar: someone gets sick, then the warnings spread.
In 2026, more than 30 states across the country have had at least one case of someone sick with Salmonella. Many of those cases are believed to be caused by contact with outdoor poultry, like ducks and chickens.
At the same time, there’s been a separate wave of food recalls for Salmonella contamination, tied to milk powder used in snack seasoning.
It can make the bacteria seem everywhere. Salmonella isn’t new—each year, the U.S. sees some 1.35 million Salmonella infections, according to the Centers for Disease Control and Prevention (CDC). Still. when recalls pile up and case counts spread across states. the public can’t help but notice what looks like momentum.
And as it turns out, part of that momentum may be built into the way outbreaks are found.
Craig Hedberg. an epidemiologist and professor at the University of Minnesota’s School of Public Health. says people may be noticing more Salmonella recalls or news about infections because public health authorities have gotten better at detecting outbreaks. “That has really improved our ability to detect outbreaks. ” Hedberg says—pointing to a major shift in how cases are linked.
In recent years, laboratory practices have improved to the point where experts can “fingerprint” Salmonella. With whole genome sequencing. scientists analyze samples from people who have gotten sick with Salmonella and determine when cases might be related—even if the patients live far apart. Hedberg says the U.S. only started using whole genome sequencing for salmonella surveillance as a nation as of 2019.
The workflow then moves state by state: each state does this and then gives their data to the CDC, which looks for clusters of related cases and investigates the source.
For households, that can translate into a sharper focus on backyard risk. In investigations, officials interview people who have been infected to find commonalities, like if they’ve had contact with any backyard chickens.
Hedberg says outbreaks associated with people getting young chickens or other water fowl like ducks have been showing up “every year.” He adds that these practices started to get more common particularly around COVID, as people became more interested in having their own egg source in their backyard.
The other side of the coin is that as officials learn what sources are emerging. they ask about those sources more frequently. “Some things became more common. But we also became more aware that those were potential problems. ” Hedberg says. explaining why these exposures can move higher on the list of suspicious activities investigators want to hear about.
That same logic—multiple routes into illness, plus better detection—helps explain why this year’s recalls have looked unusually broad.
A wave of recalls has moved across brands. from Kroger’s cheese garlic croutons to Williams Sonoma’s white cheddar Fireworks popcorn and Ghirardelli’s powdered drink mixes. While the products differ. the source ties back to a common ingredient: powdered milk from California Dairies. often used in flavorings.
Regulatory agencies sample products for outbreaks. but these recalls appear widespread because the same flavoring ingredients could be in dozens or hundreds of consumer products. Hedberg describes how the scope can keep growing when contamination is found early in distribution: “If you identify contamination early in the distribution process. then we may see a whole series of recalls occurring.” As investigators figure out more of which products could have contained the contaminated milk powder. “[the scope of recalls] continues to increase.”.
This has happened before. In a 2008 Salmonella outbreak tied to peanut butter and peanut paste, the peanut paste was then an ingredient in many other food products. The result was thousands of different products recalled.
Hedberg puts the underlying mechanics in plain terms: “We have a lot of food items that contain a lot of ingredients, and the more ingredients you put into food, the more there are opportunities that something with one of the ingredients could be a problem.”
Even when people see outbreaks as a trend, experts warn that it’s harder to confirm whether Salmonella itself is truly increasing. Hedberg says whether the problem is increasing or not is “more difficult to really put a good answer to,” partly because there are so many possible sources.
Salmonella infections have been linked to chicken, pork, beef, turkey, fruit, vegetables, and nuts. The CDC notes that “any food can become contaminated. even processed foods (such as flour).” Outside food. Salmonella has also been linked to lizards like pet chameleons. aquatic invertebrates. farm animals. and wildlife.
The environment is part of the concern too, and climate change is often raised as a contributing factor. Hedberg says Salmonella are bacteria that grow when it is warmer out. which can mean “enhanced survival in the environment. and more rapid amplification. along certain transmission routes.” He also describes a broader shift: climate change is altering the populations of all sorts of bacteria and intensifying infectious diseases.
A 2025 study found that climate change is amplifying pathogen evolution, and even antimicrobial resistance, for everything from cholera to E. coli to Salmonella.
Warmer temperatures aren’t the only issue. Heavy rainfall can spread Salmonella by moving the bacteria around an environment. In an area with a lot of cattle, for example, fresh produce is also often grown nearby. Hedberg says. “The manure from the cattle could move in the environment by way of water. ” and that “intense rainfall events can facilitate some of that.”.
Climate change can also disrupt normal production cycles—through flooding or even drought—which makes it harder for farmers to maintain their usual planting and harvesting schedules. Hedberg says, “Every time you start disrupting normal systems, you increase the likelihood that something can go wrong.”.
For individuals, the guidance remains practical: Hedberg suggests separating animals from produce to mitigate risk, but acknowledges that it will always be difficult because “we’re growing fresh produce out in nature, and nature is incredibly complex.”
He also urges people to take food safety seriously anytime they bring food into their homes: properly preparing. storing. and cooking foods. and washing your hands. The CDC notes Salmonella infections are more common in the summer because warmer weather creates ideal conditions for the bacteria to grow; experts encourage people to refrigerate or freeze their perishables to reduce risk.
But prevention doesn’t sit only in kitchens. Hedberg says the U.S. needs a strong public health system across the country, including maintaining its funding and regulations. He points to the Trump administration’s actions. saying it has attacked the public health system by gutting CDC staff and funding for public health programs. and that the Food and Drug Administration (FDA) is currently undergoing a leadership restructuring.
Disease surveillance costs money. and Hedberg says any threat to public health agencies “represents a threat to our ability to conduct surveillance. and that surveillance is really important for prevention.” He adds that instability in the system is a risk too: “The instability in the system itself is a potential risk for letting things slip through the cracks. ” and potentially undermining the safety of our food systems.
In other words, this year’s warning cycle isn’t driven by a single cause. It’s shaped by how quickly authorities can detect what’s happening. how ingredients move through a complicated food chain. how weather can reshape microbial risk. and whether the public health infrastructure is strong enough to keep pace.
Salmonella outbreaks 2026 Salmonella CDC whole genome sequencing food recalls California Dairies powdered milk snack seasoning backyard poultry ducks chickens climate change and bacteria heavy rainfall and flooding food safety FDA CDC funding