Fighting the Viral Wars (video) University of Texas at Austin Loading video... Caption Using Legos and toy soldiers, biologist Chris Sullivan explains the concept of viral latency, which is a mechanism that certain viruses, including herpes and HIV, have evolved to hide from the host immune response. It's this ability to hide away in a "latent reservoir" that makes it so difficult to to cure these diseases. Credit Produced by Daniel Oppenheimer Usage Restrictions None 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.