This summer, the Arkansas Department of Health advised people who had eaten at a specific McDonald’s to get vaccinated for Hepatitis A. This followed news that a McDonald’s employee had tested positive for the virus, which has infected nearly 400 people in Arkansas since early last year, Delish reports. When these events occur, expect the food safety landscape to shift – and put restaurant operators on the defensive. As of this writing, Detroit’s Public Health and Safety Committee was in the process of proposing an ordinance to require restaurants to use color-coded signs (as opposed to letter grades) to clarify their standing with the city’s health department, Food Safety News reports. A Hepatitis A outbreak in Detroit motivated the action, which is intended to both push operators to improve results and provide greater transparency to the public about a restaurant’s food safety record. The model for the color-coded system is Columbus, Ohio, which has a four-tiered system to classify a restaurant’s standing with the health department: Green, yellow, white and red signs announce whether a restaurant has passed inspection and meets the city’s standard, is closed based on the order of local health department officials, or falls somewhere in between.