Biodiversity Flow Chart (IMAGE) U.S. National Science Foundation Caption Contact with rodents and their waste puts humans at risk for exposure to hantavirus. Credit Zina Deretsky, National Science Foundation 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.