Table VI.
Major Assumptions of the Model
| Assumptions Related to Employee Practices/Behavior and Retail Setting |
| The food establishment includes one food preparation area and one restroom |
| Three workers are present in the food establishment, and two of these workers are food workers |
| Five shifts of eight hours were simulated, with 200 servings per food worker and per shift (total of 2,000 servings) |
| The food serving includes three ingredients, one of the ingredients is cooked |
| Food preparation and assembly tasks take place in five‐minute sequences |
| Contact between food, hands/gloves, and FCS occurs twice for each ingredient during food preparation and assembly |
| Contact between hands/gloves and NFCS occurs once for each ingredient during food preparation and assembly |
| The pace of sandwich assembly is 1 per minute |
| The pace of ingredient preparation is 20 pieces per minute |
| Restroom had two hand‐touch points: the hand sink faucet handle and the restroom door handle. |
| Settings studied in the literature used for the meta‐analyses are representative or comparable to this setting |
| Category “noncompliant 3” represents 50% of the proportion of total noncompliant |
| Assumptions Related to Illness and Norovirus |
| Ingredients are initially free of norovirus |
| Restroom, food facility, and food contact equipment are initially free of norovirus |
| Transmission of norovirus to customer only occurs through food |
| Only one employee (FE‐1) is symptomatic |
| Symptomatic employees always experience diarrhea |
| All assumptions from Teunis et al.32 dose–response models (infection and illness) |
| Assumptions Related to Data and Statistical Analysis |
| RT‐PCR data represent the number of norovirus particles in the dose–response model |
| All actions on norovirus particles (transfer, survival, washing, and disinfection) are applied independently on each particle |
| Norovirus surrogates have similar properties (up to a scaling factor) as norovirus (survival, transfer, handwashing, and disinfection) |
| Norovirus genogroup GI and GII have similar properties and infection probability |