Studying Influenza Transmission (IMAGE) University of Maryland Caption A study participant sits in the Gesundheit II machine, which is used to capture and analyze influenza virus in exhaled breath at the University of Maryland School of Public Health. Credit University of Maryland Usage Restrictions None License Licensed 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.