Until now, there had been no legal basis for this regulation, which - unlike in restaurants - was initially more broadly defined for refectories and canteens. The new regulation is now enshrined in the state's Corona Ordinance. After the "3G" rule for protection against the spread of Corona infections applies to participation in classroom teaching on campus from the start of the winter semester 2021/22, the University of Erfurt had lobbied the state of Thuringia to also introduce the regulations in the refectory to protect its students and employees.