What practice is useful for preventing norovirus from causing foodborne illness?

Correct handwashing is crucial for preventing norovirus from causing foodborne illness because this virus is primarily transmitted through contaminated hands, surfaces, and food. Norovirus can spread rapidly, especially in settings like restaurants or food processing facilities, where food handlers can easily transfer the virus from their hands to food. Effective handwashing with soap and water removes contaminants, including norovirus particles, thereby significantly reducing the risk of transmission.

While using gloves can provide a barrier, they are not a substitute for proper hand hygiene. Gloves can become contaminated just like hands, so without washing hands properly before putting on gloves or after removing them, the risk of foodborne illness remains. Cooking food thoroughly does kill many pathogens, but it does not address the transmission through contaminated hands or surfaces which is the primary route for norovirus. Storing food properly is essential for preventing growth of bacteria but doesn't specifically target norovirus prevention. Therefore, correct handwashing is the most effective measure against norovirus.