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As people rethink meals for the new year, one food scientist warns that two popular choices carry outsized risks. Simple ingredients can hide dangerous bacteria, and a few habits in the kitchen greatly increase your chance of getting sick.
Why raw sprouts are a common source of foodborne illness
Sprouts are often sold as a crisp, nutrient-dense boost for sandwiches and salads. But the conditions used to grow them—warm, damp and enclosed—are ideal for bacteria to flourish.
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- Types at risk: mung bean, alfalfa, broccoli and mustard sprouts.
- Bacteria involved: salmonella and E. coli are commonly linked to sprout outbreaks.
- Why they’re dangerous: the seeds germinate in moisture, which shelters pathogens and makes washing less effective.
Because contamination can occur deep inside the sprout mass, rinsing may not remove all microbes. When sprouts are eaten raw, they can trigger symptoms such as diarrhea, fever and vomiting.
Leafy greens and other veggies can also carry pathogens
It’s not just sprouts. Dark leafy greens and other vegetables can act as vectors for bacteria if they’re contaminated at harvest or handled poorly.
- Leafy greens are often eaten raw and can hide dirt or bacteria between leaves.
- Produce like tomatoes, onions and cauliflower can become contaminated during growing, processing, or retail handling.
- Trendy vegetables are not immune—any produce eaten uncooked can transmit pathogens.
How contamination happens
Contamination can occur on the farm, during transport, at the store, or in your kitchen. Moisture, warm temperatures, and shared surfaces make spread more likely.
Rare burgers: when tenderness meets danger
Burgers cooked to a rare or medium-rare finish may look and taste great. But the danger isn’t only the cooking level—it’s also how the meat was processed.
Some steaks and cuts undergo mechanical tenderization, a process that uses needles or blades to soften tissue. That action can push bacteria from the surface into the interior.
- If you eat meat that has been pierced and not cooked thoroughly, those internal bacteria may survive.
- To kill embedded pathogens, follow safe internal temperature guidelines.
Guidance: USDA recommends cooking whole cuts to an internal temperature of 145°F and letting them rest for three minutes. Ground beef should reach 160°F.
Preventing cross-contamination in your kitchen
Food safety depends as much on handling as on cooking. Bacteria from high-risk foods can transfer to counters, utensils and other ingredients.
- Wash hands thoroughly with soap and warm water before and after handling raw foods.
- Use separate cutting boards for raw meat and ready-to-eat items.
- Sanitize counters, sinks and utensils after contact with raw meat or damp produce.
- Store raw meat below prepared foods in the fridge to prevent drips and cross-contamination.
Tip: Treat any moisture from raw foods as a potential carrier of bacteria.
Smart choices at the store and at the table
Reduce risk by choosing and preparing foods with safety in mind.
- Consider avoiding raw sprouts if you are elderly, pregnant, immunocompromised, or serving children.
- When ordering meat at restaurants, ask about whether a cut has been mechanically tenderized.
- Thoroughly cook ground meats and pierced cuts to recommended temperatures.
- Rinse and dry produce, and remove outer leaves from leafy greens before use.
Remember: small precautions in shopping, cooking and cleaning cut the odds of a meal turning into a trip to the doctor.
