Keeping Omicron infection risk low requires room ventilation rates 50 times greater (IMAGE) Tsinghua University Press Caption Figure showing that the risk of infection for a given rate of ventilation (cubic meters of airflow into a room or building per hour) has sharply increased as new SARS-CoV-2 variants have emerged. Credit Building Simulation, Tsinghua University Press Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.