Final answer:
Food-borne illnesses can be transmitted through various routes, but the transfer of pathogenic microorganisms from one food to another is not one of them.
Step-by-step explanation:
Food-borne illnesses can be transmitted through various routes, but one route that does not transmit these illnesses is transfer of pathogenic microorganisms from one food to another. This means that if raw meat gets onto raw produce, for example, it will not lead to the transmission of food-borne illnesses. However, it is important to note that the other routes mentioned in the question can transmit food-borne illnesses, such as microscopic particles of human or animal feces contaminating food, someone with a cold sneezing and tiny water droplets landing on your face, pathogenic microorganisms growing on food processing equipment, and employees at restaurants not washing their hands after using the bathroom and then handling food.