Salmonella is a bacteria responsible for over 1.3 million foodborne illness infections a year in the United States, according to the CDC, most often traced back to raw or undercooked meat, poultry, eggs, or unpasteurized dairy. Cooking food to an internal temperature of at least 165°F reliably kills it, which is why that number shows up as the safe minimum for poultry specifically, one of the foods most closely associated with Salmonella risk.
Knowing what actually addresses Salmonella, and what doesn't, matters because a couple of common assumptions about it turn out to be wrong.
What Salmonella actually is
Salmonella is a genus of bacteria that causes one of the most common types of foodborne illness in the United States. It's typically transmitted through raw or undercooked animal products, meat, poultry, and eggs most commonly, along with unpasteurized dairy. Produce has also been linked to Salmonella outbreaks at times, generally through contaminated water or handling during growing or processing rather than being an inherent risk of produce itself.
Its prevalence is part of why Salmonella specifically, rather than foodborne bacteria in general, gets called out so often in food-safety guidance: it's genuinely one of the more common causes of foodborne illness people encounter, not a rare or theoretical risk.
What Salmonella infection actually feels like
According to the CDC, most people infected with Salmonella develop diarrhea, abdominal cramps, and fever, typically within 8 to 72 hours of eating contaminated food. Chills, headache, nausea, and vomiting can accompany these core symptoms as well. Most healthy adults recover within about a week without needing specific medical treatment beyond managing symptoms and staying hydrated.
Severe cases are a different story, and they can require hospitalization, occasionally with life-threatening complications, particularly for young children, older adults, and anyone with a weakened immune system. This is why food-safety guidance around Salmonella specifically calls out these higher-risk groups rather than treating the general population as facing a uniform level of risk.
Cooking does kill it, reliably
Cooking food to 165°F, the FDA and USDA's established minimum for poultry, reliably kills Salmonella. This number isn't arbitrary; it reflects a temperature that provides a genuine, measurable safety margin in both home and commercial kitchens, addressing Salmonella along with other bacteria that can be present in raw poultry.
This is one of the more reassuring facts about Salmonella specifically: unlike some other food-safety concerns that require more nuanced handling, proper cooking straightforwardly addresses it. A meat thermometer used correctly, checked in the thickest part of the food, is what confirms that 165°F has actually been reached, rather than relying on color or time alone.
Freezing doesn't kill it, and this is the part people get wrong
A common misconception is that freezing food addresses bacterial contamination the way cooking does. It doesn't. Freezing pauses bacterial growth by making the environment inhospitable for active reproduction, but it doesn't kill Salmonella outright. Food that was contaminated before freezing is still contaminated once thawed, and it needs to be cooked to a safe temperature just as thoroughly as it would if it had never spent time in the freezer.
This matters practically: thawing frozen chicken and assuming it's somehow safer than fresh chicken because it spent time frozen is a mistake. The freezing period doesn't reduce the cooking requirement at all.
How Salmonella actually spreads in a kitchen
Beyond the food itself, Salmonella spreads readily through cross-contamination: raw poultry juices touching a cutting board, countertop, or utensil that then touches ready-to-eat food without being washed in between. A cutting board used for raw chicken and then, without washing, used to slice vegetables for a salad can transfer Salmonella to food that will never be cooked, defeating the entire purpose of cooking the chicken properly in the first place.
Using separate cutting boards for raw meat and ready-to-eat food, or thoroughly washing a single board with hot, soapy water between uses, closes this specific gap. This is a distinct risk from undercooking, and addressing one without the other still leaves a real path for Salmonella to reach food that was never going to be heat-treated at all.
How long Salmonella symptoms typically last, and when to see a doctor
Most healthy adults recover from a Salmonella infection within about a week without medical intervention beyond rest and hydration, per CDC guidance, though diarrhea can occasionally persist longer before fully resolving. Severe dehydration, a high fever, blood in the stool, or symptoms that don't improve after several days are signs it's time to seek medical care rather than continuing to manage symptoms at home, particularly for someone in a higher-risk group like a young child or an older adult.
Because Salmonella infection shares symptoms with several other illnesses, a healthcare provider may want a stool sample to confirm the specific cause, which matters for treatment decisions and, in some cases, for public health tracking of a broader outbreak.
Salmonella and eggs specifically
Eggs carry their own specific Salmonella risk, since the bacteria can be present inside an egg, not just on the shell, which is part of why recipes calling for raw or undercooked eggs, homemade mayonnaise, certain dressings, or a soft-cooked egg, carry a real, if generally low, risk for the general population and a higher one for higher-risk groups. Pasteurized eggs, treated specifically to address this risk while remaining raw or lightly cooked, are a real alternative for a recipe that calls for uncooked egg, worth seeking out specifically for anyone in a higher-risk group who still wants to make a dish that traditionally uses raw egg.
Salmonella and produce specifically
While meat, poultry, and eggs are the most commonly cited Salmonella sources, produce has been linked to real, documented outbreaks over the years, generally traced back to contaminated water used during growing or processing, or handling issues somewhere along the supply chain rather than an inherent risk in the produce itself. This is part of why washing raw fruits and vegetables under running water before eating them, even ones that will be peeled, remains standard food-safety guidance, since it addresses surface contamination that can occur at any point before the produce reaches a kitchen.
Sprouts specifically carry an elevated Salmonella risk compared to most other produce, since the warm, humid conditions used to grow sprouts also happen to favor bacterial growth, which is part of why raw or lightly cooked sprouts are sometimes flagged as a higher-risk food for anyone in a higher-risk group specifically, alongside the animal-product sources that make up the bulk of Salmonella cases overall.
Salmonella in pet food and treats
Salmonella contamination isn't limited to human food; it's also been documented in pet food and treats, particularly raw or minimally processed pet food products, which carries a real risk both to pets themselves and to household members who handle contaminated pet food or come into contact with a pet that's ingested it. Washing hands thoroughly after handling pet food or treats, and storing them separately from human food preparation areas, addresses this less commonly discussed but genuine pathway for Salmonella exposure within a household.
This is worth knowing specifically for anyone in a household with young children, who may have more direct contact with pet food bowls or with a pet shortly after it's eaten, since children fall into one of the higher-risk groups already covered throughout this guide for Salmonella infection generally.
Why this connects to broader food-safety habits
Salmonella risk ties directly into several of the common food-safety mistakes covered elsewhere on this site, particularly washing raw poultry, which spreads bacteria including Salmonella around a kitchen rather than removing it, and judging doneness by color instead of an actual temperature check, which is exactly the kind of guesswork that can leave poultry under 165°F while looking fully cooked.
The short version: Salmonella is common, genuinely can make people seriously ill, and is reliably addressed by cooking to 165°F. Freezing doesn't substitute for that step, no matter how long food has spent in the freezer beforehand.