The fourth corona wave is looming. “We now see that what we announced in October 2020 as preliminary results of the RESTART-19 project is playing out in practice: Cultural and sporting events can take place indoors at lower incidence rates if – and that’s crucial – excellent ventilation technology and hygiene protocols tailored to the respective venue are in place. Hygiene protocols need to be spot-on and every event must be assessed on its own merits,” says Dr Stefan Moritz, RESTART-19 project lead and head of the Department of Clinical Infectiology at University Hospital Halle. Applying the same concept as a blueprint to all events is hardly expedient, Moritz emphasizes.