Human Herpesvirus 6 (IMAGE) Washington University School of Medicine Caption Human herpesvirus 6, pictured above, is just one of numerous viruses found living in and on the bodies of healthy humans. The virus commonly causes illness in young children but is found in the mouths of some healthy young adults, where its presence indicates an active viral infection despite a lack of symptoms. Credit <p><a target="_blank"href="http://en.wikipedia.org/wiki/Human_herpesvirus_6#mediaviewer/File:HHV-6_inclusion_bodies.jpg">Wikimedia Commons</a> (Public Domain) Usage Restrictions None, this is in the public domain. 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.