Map of the Pacific Northwest Depicting IHNV Prevalence (2000-2012) (image) Cary Institute of Ecosystem Studies Share Print E-Mail Caption Map of the Pacific Northwest depicting IHNV prevalence over the 2000-2012 time period per hatchery site (yellow circles) and wild site (purple circles). Sites where virus was detected are surrounded by rings scaled by number of years with IHNV detected in adults (orange) and juveniles (red). Also depicted are the Columbia and Snake Rivers (blue). Credit Breyta et al. Usage Restrictions To promote this press release. Share Print E-Mail 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.