When most people think of food poisoning, they picture spoiled ingredients or undercooked meat. But there’s another, far more subtle threat lurking in home kitchens, restaurant prep stations, and even grocery store delis: cross-contamination. It’s the invisible culprit that turns safe food into a health hazard—without changing its look, smell, or taste.

Cross-contamination is when harmful bacteria are transferred from one surface, food item, or utensil to another. It doesn’t require raw meat or poor hygiene—just a moment of carelessness. And when the bacteria involved are ones like E. coli, Salmonella, or Listeria, that moment can lead to widespread illness.

Why Cross-Contamination Is So Dangerous

Bacteria like E. coli O157:H7 and Salmonella need only a small window to multiply. Unlike

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