First author (IMAGE) Inselspital, Bern University Hospital Caption Bernard Surial MD, Department of Infectious Diseases, Inselspital, Bern University Hospital Credit Insel Gruppe 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.