E-SYS Quick Facts: Filling in the Gaps in Our Knowledge of Youth Health: Enhanced Surveillance of Canadian Street Youth [fact sheet]

This pamphlet describes the purpose and background of E-SYS. The program was developed to provide data on infection prevalence and risk behaviours in a hard-to-reach population not often represented in school-based or residence-based studies. It was a direct response to recommendations made at the 1997 national meeting of provincial and territorial STI directors.