Background
The Toronto Stroke Networks (TSNs) Virtual Community of Practice (VCoP) provides a web-based knowledge translation (KT) strategy to support cross-continuum interprofessional collaborative learning and system-wide integration of stroke best practices. This work aims  to:1) examine current VCoP use to support stroke best practices, and 2) share challenges and successes in implementing this KT strategy.  
Method
Using a developmental evaluation approach, a review of VCoP use focused on three domains: 1) trend analysis in website analytics and user-generated content; 2) use of VCoP groups in supporting project-based work for regional stroke system planning; and 3) stakeholder feedback. 
Results
VCoP membership has increased to 599 current users over 5 years, including a diverse clinical, community, and academic membership. To date, there are 125 resources and 549 user-generated comments related to stroke best practices on the VCoP. Of the 160 discussion groups, there are currently approximately 10 project-based discussions directly linked to regional stroke system planning. Strategies used to support engagement include: 1) facilitation of discussions by peer champions, 2) actively seeking regional expertise to answer practice-related questions, 3) weekly email digests of site activity, and 4) integrating stakeholder feedback for iterative improvement.  
Conclusion
The VCoP provides an interprofessional collaborative learning platform to support wide-spread KT for stroke best practices.  Work is underway to examine optimizing system-wide adoption of the VCoP and impact on practice change.  Knowledge created in this work supports the sustainability and spread of the VCoP to other regions and stroke systems.

SUPPORTING BEST PRACTICE STROKE CARE THROUGH A VIRTUAL COMMUNITY OF PRACTICE: CHALLENGES, SUCCESSES, AND SUSTAINABILITY