Cross-contamination occurs when two or more different surfaces come in contact with each other providing the opportunity for various microbes to be deposited on each surface. Microbes can include bacteria, fungus, molds and viruses. In a refrigerator, meat drippings from raw meat stored on a top shelf might drip onto cooked vegetables placed on lower shelf. Raw chicken placed on a grill touching a steak that is being cooked It can happen when bacteria from the surface of raw meat, poultry and raw vegetables with visible dirt (such as unwashed potatoes), are transferred onto ready to eat food, such as green salads, rice or pasta salads, cooked meats or poultry or even fruit. The bacteria on the raw food are killed when the food is cooked, but the ready to eat food gets eaten without further cooking - bacteria and all. When juices from raw meats or germs from unclean objects accidentally touch cooked or ready-to-eat foods (such as fruits or salads), cross-contamination occurs. If not cleaned correctly, the board harbors harmful bacteria. Unclean food preparation surfaces, cutting boards, knives, small appliances and utensils. If you do not use separate cooking utensils for raw and cooked items, cross-contamination will occur. If hands are not washed after handling raw food & then touching cooked food, it will also happen Sauce that is used to marinate raw meat, poultry, fish, etc, should not be served on cooked food.|||This is homework isn't it? You should pay more attention in class and it would be a doddle. Just this once I will relent. 1) storing cooked food in the raw meat section of a fridge or allowing blood from raw meat to drip on cooked food 2) Handling raw food then cooked food without washing hands or utensils properly 3) Placing cooked food on a surface that has been used for raw food without first cleaning it properly.|||Is it cross-contamination? if so do not make a salad from your left over sirloin steak slivered onto the uncooked salad veggies. I wash hands continually while cooking. I rinse cutting boards and knives after use in very hot water. I still have no clue what cross contamination might be!! It is an urban myth.|||I would not know from personal experience from the past five years. Obviously, I don't eat meat. My husband does, but he buys it all precooked. However, when I did eat meat, I did not care to touch the raw stuff. After all, one is touching the dead flesh of another animal.

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