Can You Get Salmonella From Pork? What to Know

Pork is a well-documented source of Salmonella, and eating raw or undercooked pork, or mishandling it in the kitchen, can absolutely give you salmonellosis. In Europe and the United States, pork ranks alongside poultry as one of the most important animal-derived foods linked to human Salmonella infections. The risk is real but manageable, and how you store, handle, and cook pork matters at least as much as whether the raw meat carries the bacteria in the first place.

How Common Is Salmonella in Raw Pork

If you picked up a package of raw pork from a market, there is a meaningful chance it carries Salmonella. The exact contamination rate varies by country, region, and how the pork was processed, but studies consistently find it in a significant share of retail samples. A survey of retail meat in Shanghai found Salmonella in roughly 45% of pork samples, a rate comparable to chicken in the same markets.¹ A study of raw food in Vietnam found about 61% of meat samples overall, including pork, tested positive for Salmonella.² These numbers come from markets in Southeast and East Asia, where cold-chain infrastructure and hygiene practices differ from those in North America or Western Europe. Contamination rates in countries with more tightly regulated slaughter systems tend to be lower, but they are never zero.

The numbers also shift depending on where you test along the production chain. At slaughter in Italy, Salmonella was isolated from the intestinal contents of about 37% of pigs, but only 6% of the finished carcasses, because processing steps scrub off much of the surface contamination before the meat reaches a retail case.³ So pigs frequently carry Salmonella in their guts, and the question is how effectively the slaughter and processing system keeps it off the final product.

How Pork Becomes Contaminated

Pigs pick up Salmonella on the farm from their environment, from other pigs, from contaminated feed, and from wildlife. Infected pigs often show no symptoms at all, which makes them hard to identify and separate. They shed the bacteria in their feces, spreading it through pens and housing. By the time a group of pigs reaches the slaughterhouse, a portion of the herd typically carries Salmonella even if they look perfectly healthy.⁴

At slaughter, the main risk is that gut contents come into contact with the carcass surface during evisceration. Even with careful technique, some cross-contamination is hard to avoid. Processing plants use antimicrobial washes to reduce bacterial loads. High-volume rinses with peracetic acid or other chemical treatments can knock Salmonella counts down by two to three orders of magnitude on carcass surfaces.⁵ But these washes reduce contamination rather than eliminate it, and they work alongside rather than as a substitute for good slaughter hygiene.⁶ Different Salmonella strains also respond differently to these treatments; for instance, research testing lactic acid and peracetic acid on pork found that their effectiveness varied across serovars, with some strains proving more stubborn than others.⁷

Which Salmonella Strains Come From Pork

Not all Salmonella is the same, and certain strains have strong ties to the pork production chain. In the European Union, the most frequently detected serovars in pigs are Salmonella Typhimurium, Salmonella Derby, and a monophasic variant of Typhimurium designated S. 4,[5],12:i:-. These same strains are also among the most common found in confirmed human salmonellosis cases linked to pork consumption.⁸ Other serovars like S. Rissen, S. Infantis, and S. Enteritidis also show up in pigs, though less frequently.

That monophasic Typhimurium variant deserves a note because it has been on the rise across both Europe and North America. It behaves much like standard Typhimurium in terms of the illness it causes but can be genetically distinct enough that it requires advanced genomic analysis, such as whole-genome sequencing, to properly track in outbreak investigations.⁹ The practical takeaway is that pork-associated Salmonella strains are not minor players. They are among the strains most commonly responsible for making people sick.

What Happens When You Get Sick

Salmonellosis from pork looks the same as salmonellosis from any other source: diarrhea, abdominal cramps, fever, and sometimes vomiting, usually starting 6 to 72 hours after exposure. Most healthy adults recover within a few days without treatment. But the illness can be serious enough to land people in the hospital. In one outbreak in Spain tied to dried pork sausage, 18% of patients required hospitalization, and the median age of patients was just four years old, a reminder that children are disproportionately affected.¹⁰ Older adults and people with compromised immune systems are also at higher risk of severe outcomes. For most people, though, the illness is unpleasant rather than dangerous.

Why Your Kitchen Matters More Than the Slaughterhouse

Even if the raw pork in your refrigerator carries Salmonella, you can prevent infection through proper handling and cooking. The flip side is also true: sloppy kitchen habits can turn a small amount of surface contamination into an illness. Cross-contamination, meaning the transfer of bacteria from raw pork to surfaces, hands, utensils, and eventually to food you eat without further cooking, is a major transmission route.

A simulation study of home cooking preparation found that hands, knives, and cutting boards exposed to raw contaminated pork were almost universally contaminated afterward. The same study found that using the same cutting board for raw pork and then for cooked or ready-to-eat food carried the highest risk of transferring Salmonella, causing cross-contamination in about two-thirds of trials. Using the same knife was less risky but still problematic. Simply cleaning hands properly and using separate tools for raw and cooked food dramatically cut the transfer rate.¹¹

The cutting board material matters too. Salmonella can survive on polyethylene and glass boards for up to four hours but only about two hours on wood. Transfer rates from wooden boards to food were also lower than from plastic or glass surfaces.¹² That said, all board types can transfer bacteria if you use them for raw meat and then place ready-to-eat food on the same surface without thorough washing in between.

Another detail that often surprises people: the transfer of Salmonella from pork to a knife is fairly efficient. One study measuring cross-contamination ratios during pork cutting found that an average of about 19% of the bacteria on the meat transferred to the knife, and about 58% of the bacteria on a contaminated knife transferred back to subsequent pieces of pork or other food.¹³ The knife becomes a shuttle, picking up bacteria from one piece and depositing them on the next thing it touches.

Ground Pork Is a Special Case

Ground pork tends to carry more risk than whole cuts, for a couple of reasons. Grinding mixes surface bacteria throughout the product, so any Salmonella on the outside of the meat ends up evenly distributed inside. With a whole pork chop, thorough surface cooking can kill the bacteria even if the very center is slightly pink. With ground pork, the bacteria are everywhere, so the entire mass needs to reach a safe temperature.

A risk assessment modeling ground pork in the United States estimated an average of about 45 cases of salmonellosis per 100,000 Americans annually from ground pork consumption alone. The model found that cooking temperature was the single most influential factor in whether someone got sick, more important than storage temperature and far more important than other processing variables.¹⁴ The message is straightforward: cook ground pork thoroughly. The USDA recommends an internal temperature of 160°F (71°C) for ground meats. Using a meat thermometer is the only reliable way to confirm you have hit that mark, since color alone is not a trustworthy indicator.

Dry-Cured and Ready-to-Eat Pork Products

Salami, prosciutto, coppa, and other dry-cured pork products are often eaten without any additional cooking. People assume the curing process takes care of any pathogens, and for the most part it does reduce them considerably, but not always to zero. The combination of salt, low moisture, acidity, and time creates an environment hostile to most bacteria. Salmonella, however, has evolved stress-response mechanisms that allow it to tolerate these conditions in some cases.¹⁵

A study of Italian salami produced with Salmonella-positive raw materials found that most batches tested negative after their standard curing period. But about 13% of salami made from contaminated starting materials still tested positive for Salmonella even after regular curing. In those positive cases, extended curing of 49 to 86 days eventually brought samples to undetectable levels, and lower water activity from the longer drying was associated with lower Salmonella presence.¹⁶ The contamination levels in the positive samples were low, but they were still there. Real outbreaks tied to dry-cured pork sausage have been documented, including the Spanish outbreak mentioned earlier involving both Typhimurium and Derby strains in dried sausage.¹⁰

For most healthy adults, the low bacterial counts in properly cured products make the risk quite small. But if you are pregnant, immunocompromised, very young, or elderly, it is worth knowing that “cured” does not always mean “Salmonella-free.”

Refrigeration Slows Salmonella but Does Not Kill It

A common misconception is that keeping pork cold in the refrigerator will eliminate any Salmonella present. It will not. Refrigeration slows bacterial growth, but Salmonella can survive at refrigerator temperatures for weeks. A study of vacuum-packed, moisture-enhanced pork stored at 4°C (standard fridge temperature) found that Salmonella Typhimurium numbers did not drop dramatically even after 28 days. When the storage temperature crept up to 10°C, which is warmer than a fridge should be but happens more often than people realize, Salmonella counts actually increased.¹⁷

There has been some research into natural antimicrobials that could be added to pork during storage. Oregano essential oil, for example, was tested at various concentrations in minced pork stored under refrigeration. At moderate concentrations it reduced Salmonella counts by two to three log units, and at the highest concentration tested it pushed levels below the limit of detection.¹⁸ These are intriguing findings, but oregano oil at concentrations high enough to eliminate Salmonella would also noticeably change the flavor of the pork, so commercial adoption has been limited. The practical lesson remains the same: treat cold storage as a way to buy time, not as a way to sanitize the meat.

The Antibiotic Resistance Problem

One dimension of pork-associated Salmonella that does not get enough public attention is antibiotic resistance. Pigs are among the most heavily medicated livestock animals worldwide. Antibiotics used in pig farming, both for treatment and historically for growth promotion, create selective pressure that favors resistant Salmonella strains. The result is that a substantial share of the Salmonella found in pork is resistant to multiple drugs.

A study tracing Salmonella through the entire pig production chain found that roughly 83% of isolates were multidrug-resistant. The most common resistance pattern involved ampicillin, streptomycin, and tetracycline, and resistance was most concentrated at the farm level, where about 95% of isolates showed multidrug-resistant profiles, declining somewhat by the retail stage.¹⁹ Studies in Southeast Asia have found similarly high rates of multidrug resistance in Salmonella from pigs, pork, and human clinical samples alike.²⁰

For a healthy person who gets salmonellosis and recovers on their own, antibiotic resistance is largely irrelevant because most cases do not require antibiotics. But for the fraction of patients who develop invasive infections, especially children, older adults, and immunocompromised individuals, drug-resistant Salmonella can be genuinely dangerous. If first-line antibiotics do not work, treatment becomes more complicated and outcomes can be worse. This is a public-health concern that stretches well beyond any one plate of pork.

Wild Boar and Game Pork

If you hunt wild boar or buy wild boar meat, the same basic concerns apply, but the details differ. Wild boar are not given antibiotics, so resistance profiles tend to be different from farmed pork. However, they still carry Salmonella. A literature review covering studies from 2012 to 2022 found that Salmonella prevalence in wild boar populations varied enormously depending on the study, from as low as about 1% to as high as 67% based on antibody testing of blood serum and tissue samples.²¹ That enormous range reflects differences in geography, habitat, population density, and testing methods. The point is that wild boar meat is not inherently safer than farmed pork when it comes to Salmonella. Field dressing conditions for hunted animals are also typically far less controlled than a regulated slaughterhouse, which means carcass contamination can be higher.

Practical Steps That Actually Reduce Your Risk

Knowing that raw pork can carry Salmonella does not mean you need to avoid it. People eat pork safely every day. The gap between “the raw meat might carry bacteria” and “you get sick” is bridged almost entirely by a handful of kitchen practices.

Use a thermometer: Cook whole-muscle pork cuts to at least 145°F (63°C) with a three-minute rest, and ground pork to 160°F (71°C). Color is unreliable as an indicator of doneness.
Separate boards and knives: Use one set of cutting tools for raw meat and a different set for ready-to-eat food. If you cannot use separate tools, wash them thoroughly with hot soapy water between uses.
Wash hands aggressively: After touching raw pork, wash your hands with soap and water for at least 20 seconds before touching anything else in the kitchen.
Keep your fridge cold: Make sure your refrigerator stays at or below 40°F (4°C). Even a few degrees of drift can let Salmonella start multiplying.
Do not rinse raw pork: Rinsing raw meat in the sink splashes contaminated water onto surrounding surfaces. It does nothing to remove pathogens that cooking would not handle.

These are not revolutionary suggestions, but they are remarkably effective when followed consistently. The risk assessment of ground pork consumption found that cooking temperature dwarfed every other factor in determining whether someone got sick, which is both reassuring and a reminder that the most important food safety tool in your kitchen is a five-dollar thermometer.