Bridging the gap between public and private healthcare: Influenza-like illness surveillance in a practice-based research network.

This article describes the development, testing, and implementation of the OKAlert-ILI System, a bidirectional, dual-use influenza-like illness surveillance and messaging system, during the influenza seasons of 2003-2004 and 2004-2005 in the Oklahoma Physicians Resource/Research Network, a primary care practice-based research network. We describe how the Oklahoma Physicians Resource/Research Network connected 30 primary care providers to the Oklahoma State Department of Health and how surveillance results were analyzed and fed back to the clinicians on a weekly basis. We demonstrate the timeliness, sensitivity, specificity, acceptability, validity, flexibility, and cost of the system.