Hazard identification: from a quantitative to a qualitative approach

Hazard identification is a common step in the hazard analysis and risk-assessment processes. The fact that this step is shared between the two processes is creating some confusion about how they can be used in our food safety programs. Hazard analysis and risk assessment are fundamentally different and independent processes.Hazard analysis is a qualitative, local process conducted by a food plant's HACCP team. This process usually requires several weeks or months to complete. In contrast, risk assessment is a quantitative, global process in which a numerical degree of risk can be calculated for a particular hazard. It is usually conducted by a large consortium that includes regulatory, public health, academic, and industry participation. It is a longer process, typically requiring several months or years for completion.In hazard analysis, one major method for the identification of hazards consists of a review of the sensitive ingredients used in food production. Many food companies maintain sensitive ingredient lists for hazards such as Salmonella, Staphylococcus aureus, Bacillus cereus, Listeria monocytogenes, aflatoxin, allergens, etc. Another major method for the identification of hazards consists of an open-ended brainstorming process by the HACCP team, which in 1992 replaced the brief, formal hazard analysis process that was first used about 30 years ago. The limited number of questions considered in the formal process proved to be insufficient to address the needs of the food industry, which is continually dealing with new hazards, new products, new processes, new markets, and new regulations.HACCP systems are designed to control identifiable hazards. Additional hazards that may need to be included in HACCP plans include previously unknown hazards that are identified by epidemiological efforts, and “regulatory hazards” that are mandated in new food regulations.