Hygiene is the set of conditions and measures necessary to control hazards and ensure that a foodstuff is conform for human consumption, taking into account its intended use at all stages of the food chain. Food safety (or food hygiene) is used as a scientific method/discipline describing handling, preparation, and storage of food in ways that prevent foodborne illness. The occurrence of two or more cases of a similar illness resulting from the ingestion of a common food is known as a food-borne disease outbreak.