What is the primary source of bacteria in food service environments?

In food service environments, food handlers are the primary source of bacteria because they have direct contact with food at various stages of handling, preparation, and serving. They can introduce pathogens through their hands, clothing, or if they are ill, potentially contaminating food items. Proper training in hygiene practices, such as handwashing and use of gloves, is essential to prevent bacterial contamination from this source. While floors, walls, cleaning supplies, and pests can also contribute to contamination, the activities and habits of food handlers pose the most significant risk and are thus focused on in food safety training.