Salmonella Outbreaks: Key Insights from a Food Safety Expert

Other recent outbreaks have been associated with home-delivery meals, dry dog food, cantaloupe, cucumbers, diced onions, alfalfa sprouts, basil, flour, raw cookie dough, fish, ground beef, charcuterie meat, pistachio cream, and peanut butter. An outbreak is classified when multiple individuals become ill from the same food.

Despite the perception that Salmonella outbreaks are on the rise in 2026, CDC data indicates that the number of outbreaks over the last five years has remained consistent. However, concerns exist regarding potential increases due to reduced federal oversight of food safety following significant budget cuts to public health agencies during the Trump administration.

Salmonella is the second-most common foodborne illness globally, infecting an estimated 1.35 million people annually in the U.S., leading to around 26,500 hospitalizations and approximately 420 deaths each year. These numbers may underreport actual infections since many individuals recover without seeking medical attention.

Those most likely to seek treatment tend to be more vulnerable populations, including children, older adults, pregnant individuals, and people with weakened immune systems. The annual economic burden of Salmonella infections in the U.S. is approximately $2.4 billion, encompassing medical costs and lost wages.

Salmonella primarily originates in the intestinal tracts of humans and animals, including birds and insects, and can persist in various environments. When it exits through feces, it can contaminate a range of surfaces and materials. The bacteria thrive in optimal conditions of 95 to 98.6 degrees Fahrenheit (35 to 37 degrees Celsius) and can survive in water for weeks, in soil or food for years, and endure extreme temperatures and acidity levels.

Salmonella's prevalence can be attributed to its ability to spread through everyday interactions with soil, water, plants, and animals. It can contaminate recreational water and agricultural produce if untreated water is used for irrigation.

Infections typically occur through the fecal-oral route, with common symptoms including stomach cramps and diarrhea that may last for 3-5 days. Certain types, such as Salmonella Typhi, can lead to asymptomatic carriers who may shed the bacteria for extended periods, creating ongoing public health risks especially in regions like Africa and South Asia.

To limit exposure to Salmonella, individuals are encouraged to practice proper hand hygiene—washing hands thoroughly after using the restroom, preparing food, or cleaning up after pets. Food safety practices, such as cleaning food contact surfaces, properly washing produce, cooking foods to the correct temperatures, and avoiding cross-contamination, are vital to reducing risks.

While it's impossible to eliminate Salmonella completely, understanding its transmission routes and adhering to food safety measures can significantly decrease the chance of infection.