Serious Outcomes Surveillance (SOS) Network

Over the past year, the SOS Network has demonstrated its continuing value as a real-time reporter of vaccine effectiveness, reporting on national influenza activity weekly to the Public Health Agency of Canada (PHAC), and adding provincial estimates for INSPQ.

Established in 2009, the SOS Network prospectively monitors annual seasonal influenza vaccine effectiveness (VE) in the prevention of hospitalization of adults with confirmed influenza illness, and is also examining the burden of influenza illness to the health care system among adults hospitalized by this disease.

SOS has successfully leveraged funding from Pfizer in order to continue surveillance of Community Acquired Pneumonia and Invasive Pneumococcal Disease. Since 2015, PHAC has provided additional targeted funding for SOS influenza surveillance. Also, SOS data have been used for secondary data analysis of the cost of influenza hospitalization across Canada, influenza outcomes and burden of disease in specific patient populations including those with Chronic Obstructive Pulmonary Disease and immunosuppression, and the impact of frailty on vaccine effectiveness and outcomes in older adults. SOS continues to provide real-time influenza and CAP surveillance data for 2017, providing invaluable data to PHAC and provincial agencies. The network is comprised of 13 sites located in BC, Ontario, Quebec, New Brunswick, and Nova Scotia. Currently, 15 hospitals in 5 provinces participate in the network’s activities, providing data on ~8000 adult acute-care beds.”