The contamination list reads like a lucky draw: chili peppers from Mexico, backyard chickens, eggs still in the shell, moringa powder, dog food, cantaloupe, cucumbers, onion dice, alfalfa sprouts, basil, raw cookie dough, fish, ground beef, cold cuts, pistachio paste, peanut butter — and pet turtles, chameleons, geckos, and bearded dragons.
By August 2026, the CDC had already counted 10 Salmonella outbreaks this year. The bacterium behind all of them is the world's second most common foodborne infection: roughly 1.35 million Americans fall ill with Salmonella every year, about 26,500 are hospitalized, and about 420 die. Even those numbers undercount the truth, because most people recover in a few days and never see a doctor.
Why does it seem to be everywhere?
Salmonella's home turf is the intestines of people and animals — insects and birds included — but the environment suits it too. Once it leaves the gut with feces, it will contaminate anything with conditions it can survive in. Under ideal conditions it lives for weeks in water and for years in soil or food. Its favorite growth range is about 35–37 °C with a near-neutral pH and high humidity — but research shows it tolerates far more: it survives from 2 °C up to 54 °C, and shrugs off strong acid or alkaline environments.
That wide tolerance is why it shows up in places no one cooked anything: recreational swimming water, even drinking water, and untreated irrigation water that enters crops through their roots or wounds.
Only about 100 of the 2,500-plus Salmonella types make you sick.
Researchers have identified more than 2,500 Salmonella types, yet only about 100 cause illness when ingested. The usual suspects are Salmonella Enteritidis and Salmonella Typhimurium, responsible for most reported infections worldwide.
The route is what food scientists call the fecal-oral pathway: the pathogen leaves an infected person or animal's gut in feces, then travels by mouth into another person's gut. Symptoms start about 8–72 hours after ingestion and usually last 3–5 days: severe abdominal cramps, watery diarrhea (sometimes with blood or mucus), headache, nausea, and loss of appetite.
One type deserves special fear: Salmonella Typhi, the cause of typhoid fever. About 4% of people infected with it become asymptomatic carriers who shed the bacteria intermittently in stool for up to a year after the first infection — and about 2.2% of carriers may carry it for as long as eight years. Typhoid remains a major public-health problem in Africa and South Asia.
The protection list, in full — from a food safety specialist.
Wash your hands, properly. After the toilet, before eating or preparing food, after touching animals or cleaning up their waste, and after touching any possibly contaminated surface. A complete wash takes at least 20 seconds — about two rounds of "Happy Birthday." Rinse under running water first, then lather thoroughly with soap, working through all surfaces, between fingers, under nails, and up past the wrists. Rinse and dry with a clean towel.
Be careful in lakes, rivers, and ponds. Salmonella can live in those waters. Try not to swallow the water, and shower with clean water after swimming to cut cross-contamination.
Clean and sanitize every food-contact surface — especially after raw meat or eggs have touched it.
Wash all produce under cool running water before cooking or eating. For firm-skinned produce, scrub with a clean brush.
Keep raw food separate from cooked or ready-to-eat food, always.
