Edgar Bronwen

In September 2004, Kingston, Frontenac and Lennox and Addington Public Health began a 2-year pilot project to develop and evaluate an Emergency Department Chief Complaint Syndromic Surveillance System in collaboration with the Ontario Ministry of Health and Long Term Care – Public Health Branch, Queen’s University, Public Health Agency of Canada, Kingston General Hospital and Hotel Dieu Hospital. At this time, the University of Pittsburgh’s Real-time Outbreak and Disease Surveillance (RODS, Version 3.0) was chosen as the surveillance tool best suited for the project and modifications were made to meet Canadian syndromic surveillance requirements. To evaluate the design and implementation of the system, a multi-sectored approach to evaluation was taken. Individual evaluations of the process, technical aspects and of cost/benefit were conducted to demonstrate proof of concept and the associated costs. An overall outcome or effectiveness evaluation will take place in spring 2006.

Objective

This paper outlines the approach used to evaluate an emergency department syndromic surveillance system on the following areas: process and outcome, cost/benefit and technical.

This paper describes a novel approach to the statistical classification of free-text chief complaints for the purpose of syndromic surveillance.

This paper outlines the integration of hospital admission, Febrile Respiratory Illness (FRI) screening and Canadian Triage and Acuity Score (CTAS) data streams within an Emergency Department Syndromic Surveillance system. These data elements allow better characterization of outbreak severity and enable more effective resource allocation within acute care settings.

In September 2004, Kingston, Frontenac and Lennox and Addington Public Health began a 2-year pilot project to develop and evaluate an Emergency Department Chief Complaint Syndromic Surveillance System in collaboration with the Ontario Ministry of Health and Long Term Care – Public Health Branch, Queen’s University, Public Health Agency of Canada, Kingston General Hospital and Hotel Dieu Hospital. At this time, the University of Pittsburgh’s Real-time Outbreak and Disease Surveillance (RODS, Version 3.0) was chosen as the surveillance tool best suited for the project and modifications were made to meet Canadian syndromic surveillance requirements.

Objective

This poster provides an overview of a RODS-based syndromic surveillance system as adapted for use at a Public Health unit in Kingston, Ontario Canada. The poster will provide a complete overview of the technical specifications, the capture, classification and management of the data streams, and the response protocols developed to respond to system alerts. It is hoped that the modifications described here, including the addition of unique data streams, will provide a benchmark for Canadian syndromic surveillance systems of the future.

Syndromic surveillance has been used been used as method of surveillance for various events in recent years. For example, post September 11th, 2001 anthrax attacks in New York City, World Youth Day in Toronto 2002, Salt Lake City 2002 Olympics, Democratic National Convention Boston 2004, and the G8 Summit in Scotland 2005.

Objective

Historical Emergency Department (ED) visits were examined to characterize ED utilization for the weeks before, during and after Queen’s University Homecoming weekend in Kingston, Ontario, Canada. This information was used to prospectively monitor the 2006 Homecoming period and inform key stakeholders.

A syndromic surveillance system has been implemented at Kingston, Frontenac and Lennox & Addington Public Health in Kingston Ontario as part of a pilot project funded by the Ontario Ministry of Health and Long-Term Care – Public Health Division. The information captured by the Real-time Outbreak and Disease Surveillance-based syndromic surveillance system includes Febrile Respiratory Illness screening results (implemented since SARS) for Emergency Department (ED) visits and information detailing hospital admissions.

Objective

To use an electronic real-time ED monitoring tool to involve public health, acute care and laboratory stakeholders in an integrated alerting and response process for community-wide influenza.

The objectives of the two day International Society for Disease Surveillance (ISDS) funded consultation were to develop expert, consensus-based recommendations that address specific, unanswered questions that hinder advances in cross border syndromic surveillance. The consultation included a discussion of the details of existing Canadian (Can) and United States (US) syndromic surveillance systems and the opportunities and challenges for new developments. Particular focus was placed on the ability to detect and respond to a bioterrorism event or infectious disease outbreak across borders.

A retrospective chart review was performed to examine chief complaint, syndrome classification and discharge diagnoses of laboratory confirmed Salmonella Enteritidis phage type (PT) 13 cases who visited the Emergency Departments (ED) of two local hospitals during a province-wide outbreak in Ontario in the fall of 2005. This assessment was used to assess the sensitivity of the ED syn-dromic surveillance system to detect a local foodborne outbreak, and to modify syndrome classification.

The objectives of this consultation, supported by the International Society for Disease Surveillance (ISDS), were to develop expert, consensus-based recommendations to promote Canadian and U.S. collaboration in using syndromic surveillance (SS) to detect, assess, monitor, or respond to potential or actual public health threats. The consultation focused on the Great Lakes region of the Canadian-U.S. borderóa region where there is substantial flow of people and goods between the two nations, a potential for occurrence of public health emergencies that affect people in both countries. Despite prior advances achieved by participants in the Early Warning Infectious Disease Surveillance (EWIDS) program regarding cross-border collaboration in notifiable disease reporting and follow-up, the EWIDS deliberations had not substantially addressed the role and uses of syndromic surveillance as part of cross-border disease prevention and control efforts, particularly in the context of potential large-scale public health emergencies. Presentations addressed a mix of issues that define the context for cross- border collaboration, including updates on SS practice and development in jurisdictions in the region, shared methodological challenges, protocols for responding to SS alerts, health information privacy regulations, and policies concerning public health emergencies that may shape information sharing during a crisis. Potential legal barriers to information sharing centered on individual-level privacy concerns, as opposed to sharing of aggregate SS data or notices of statistical alerts based on SS data. The meeting provided an impetus and agenda for future, ongoing consideration of including syndromic surveillance as a key component within the broader context of the EWIDS process. Identified priorities included development of procedures to share information about SS alerts and alert response protocols within EWIDS, increased use of SS inputs in crossborder tabletop exercises for pandemic influenza, and further collaboration in development of mapping projects that use data inputs from both sides of the border. In addition, the participants recommended that annual ISDS conferences provide a forum to address challenges in cross-border collaboration in SS practice and research.

To highlight the key role of Emergency Department syn-dromic surveillance in linking acute care and public health, thus enabling collaborative detection, monitoring and management of a local food borne outbreak.