Fig. 1 (IMAGE) University of Pennsylvania Caption Confocal imaging demonstrating the dense network of capillary blood vessels in the lung that allow oxygen to move into our bloodstream. This complex vascular network can be severely disrupted upon viral infections like influenza and COVID-19, which greatly contributes to disease severity and mortality Credit Gan Zhao Usage Restrictions n/a 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.