PT - JOURNAL ARTICLE AU - Nicholas Renzette AU - Laura Gibson AU - Jeffrey D. Jensen AU - Timothy F. Kowalik TI - Human Cytomegalovirus Intrahost Evolution – A New Avenue for Understanding and Controlling Herpesvirus Infections AID - 10.1101/009571 DP - 2014 Jan 01 TA - bioRxiv PG - 009571 4099 - http://biorxiv.org/content/early/2014/09/25/009571.short 4100 - http://biorxiv.org/content/early/2014/09/25/009571.full AB - Human cytomegalovirus (HCMV) is exquisitely adapted to the human host, and much research has focused on its evolution over long timescales spanning millennia. Here, we review recent data exploring the evolution of the virus on much shorter timescales, on the order of days or months. We describe the intrahost genetic diversity of the virus isolated from humans, and how this diversity contributes to HCMV spatiotemporal evolution. We propose mechanisms to explain the high levels of intrahost diversity and discuss how this new information may shed light on HCMV infection and pathogenesis.