On her morning shift, a food handler puts on clean disposable gloves and begins to move defrosted hamburger patties from the refrigerator to the preparation area, as directed by the cook. Then, she is asked to slice raw tomatoes. When she's done, she slices raw onions.

In this sequence of tasks, when should the food handler change gloves?

The food handler should change gloves after handling the hamburger patties and again after slicing the raw tomatoes. Changing gloves and frequent handwashing help prevent cross-contamination in food handling.

Explanation:

In the described sequence of tasks in food handling, there are key moments where the food handler should change gloves. Firstly, the food handler should change gloves after handling the raw hamburger patties and before starting to slice the raw tomatoes. Raw meats carry a high risk of transmitting foodborne pathogens and thus, to avoid cross-contamination, it is critical that she changes her gloves after handling the meat. Secondly, she should also change her gloves again after slicing the tomatoes and before moving on to slice the onions. This is to prevent foodborne allergic reactions for those who are allergic to raw tomatoes.

Hand hygiene, such as handwashing before and after glove usage and changing gloves between different food types, is vital in any food service setting to prevent cross contamination of potentially harmful bacteria.

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