Which of the following foodborne diseases is commonly associated with foods that are mixed without cooking?

Norovirus is commonly associated with foodborne outbreaks that often occur in prepared foods that are mixed and not cooked before serving. This virus is highly contagious and can be transmitted through contaminated food, surfaces, or person-to-person contact. Foods like salads (e.g., those made with mayonnaise or salad dressings) and fresh produce can easily harbor norovirus if they come into contact with contaminated hands or surfaces during preparation.

In contrast, while Salmonella and Escherichia coli can also be linked to foodborne illnesses, they are typically associated with undercooked or raw meats, eggs, or unpasteurized dairy products. Clostridium perfringens is often linked with improperly held cooked meats or dishes that have not been kept at safe temperatures. Therefore, norovirus stands out as the most relevant pathogen related to foods that are mixed without further cooking.