SAN FRANCISCO--(BUSINESS WIRE)--VMworld (booth #2425)—According to new research from Imprivata® (NYSE: IMPR), the healthcare IT security company, 70 percent of healthcare organizations that implemented virtual desktops during the last 12 months also deployed single sign-on (SSO). The Imprivata 2015 Desktop Virtualization Trends in Healthcare report validates that SSO is helping to drive adoption of desktop virtualization in healthcare by driving workflow efficiency with fast, secure access to v