City and state officials will gather today in advance of tomorrow’s observance of National Human Trafficking Awareness Day to announce the region’s collaborative effort to end demand for human trafficking.

Assembling today are Suffolk County District Attorney Daniel F. Conley, State Representatives Liz Malia and Martin Walsh, Boston Police Commissioner Edward Davis and Boston Public Health Commission Chief Medical Officer Nancy Norman on behalf of Mayor Thomas M. Menino, Boston City Councilor-at-Large Ayanna Pressley, representatives of agencies based at the Family Justice Center of Boston, and leaders of about a dozen of the partner agencies comprising Suffolk County’s Support to End Exploitation Now (SEEN) program.

Officials will gather at 2:00 this afternoon in the law library of the Suffolk County District Attorney’s office, located at One Bulfinch Place in downtown Boston.

In support of the 1/11/11 observance, officials in Boston and Suffolk County are working to “End Demand 1 by 1.” In the short term, that includes an educational campaign at two of Boston’s busiest transit hubs tomorrow; in the long term, it will entail legislative initiatives and policy shifts intended to address human trafficking as a target for law enforcement and public health agencies.

The coalition of law enforcement, public health, and social service agencies known as the SEEN program has twice been named among the Top 50 Innovative Government Programs by a Harvard University think tank. Bringing together police, prosecutors, medical professionals, social workers, educators, and others from the public and private sectors, the collaboration represents Suffolk County’s approach to human trafficking: treating youth involved in prostitution cases as victims, not offenders.