Which of the following is NOT a preventive measure against Norovirus?

Allowing bare-hand contact with food is not a preventive measure against Norovirus, as it can significantly increase the risk of contaminating food. Since Norovirus is highly contagious and can be spread through improper handling of food, it is crucial to minimize opportunities for contamination. When food handlers use their bare hands to touch ready-to-eat foods, they can transfer pathogens from their hands to the food, leading to potential outbreaks.

In contrast, excluding staff who are vomiting, washing hands frequently, and purchasing shellfish from approved sources are all important preventive measures. Excluding staff who exhibit symptoms helps to prevent the virus from being spread within the facility. Frequent hand washing is essential for helping to remove viruses and bacteria from hands, reducing the risk of transmission. Purchasing shellfish from approved sources ensures that the food being served is safe and has been handled properly throughout the supply chain.