If you met to say how do you prevent a food from getting contaminated, well you should always make sure that:
your food is covered.
Make sure it's not expired.
Wherever you going to put it, make sure that it's clean.
Keep it in the fridge
If food becomes contaminated due to a food handler, it is crucial to immediately discard the contaminated food to prevent foodborne illness. The food handler should be removed from food preparation duties and assessed for any symptoms of illness. Additionally, a thorough investigation should be conducted to identify the source of contamination, and proper sanitation procedures should be enforced in the kitchen to prevent future occurrences. Training or retraining of staff on food safety protocols may also be necessary.
Food utensils become contaminated when pathogens are transferred to its surface. This will happen when the utensils are not washed thoroughly, or someone with dirty hands touches them.
Packaged food can become contaminated through poor production practices, packaging failure or mishandling anywhere along the production-distribution-consumer route.
soil, water, and food getting contaminated by pesticides
Food sources of transmission are: contaminated milk, ice cream, vegetables and other foods which often cause epidemics.
no, gum on the wall doesn't cause food to be contaminated. food being left out to long at room temperature such as raw uncooked chicken makes food become contaminated.
People have to consume contaminated food in order to get food poisoning.
To prevent spreading illness through contaminated food.
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Foods become contaminated with enteric organisms when biological waste such as feces is allowed to be mixed during the slaughter of animals. It is also possible that food is contaminated by people handling food after bathroom visits without washing their hands thoroughly.
After you eat the contaminated food
wipe off the boots and air-dry within two minutes to prevent deteriration