Deliberate food contamination differs from accidental contamination because it:

解析

Deliberate contamination is intentional: someone tampers with, sabotages, or attacks the food supply to cause harm, which is why food-defense programs such as ALERT exist. A lapse in cooking or holding temperature is exactly the kind of handling mistake that defines accidental contamination, and natural spoilage past a use-by date is decay rather than contamination by a person. Security measures do work: limiting access to storage areas, buying from approved suppliers, and keeping receiving records all reduce the risk of a deliberate act.