Which of the following is an example of a pre-harvest food safety practice?

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Multiple Choice

Which of the following is an example of a pre-harvest food safety practice?

Explanation:
On-farm interventions that occur before harvest aim to reduce contamination at the source. Vaccinating laying hens for Salmonella enteritidis directly targets the animal before eggs are produced, which lowers colonization and shedding of the pathogen and thus reduces the chance of eggs becoming contaminated. This source-control approach is a quintessential pre-harvest measure. In contrast, pasteurization, canning, and fermentation are processing steps that occur after harvest to kill pathogens or preserve food, not interventions applied to the animals before harvest. So vaccination of the hens best fits the concept of a pre-harvest food safety practice.

On-farm interventions that occur before harvest aim to reduce contamination at the source. Vaccinating laying hens for Salmonella enteritidis directly targets the animal before eggs are produced, which lowers colonization and shedding of the pathogen and thus reduces the chance of eggs becoming contaminated. This source-control approach is a quintessential pre-harvest measure. In contrast, pasteurization, canning, and fermentation are processing steps that occur after harvest to kill pathogens or preserve food, not interventions applied to the animals before harvest. So vaccination of the hens best fits the concept of a pre-harvest food safety practice.

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