"For the last 15 years, the federal government has therefore been supporting a variety of measures (e.g. needle-exchange programs, injection rooms, housing and employment programs) in order to improve the health and the lifestyle of drug addicts and to prevent the spread of HIV and other infectious diseases. Compared with the late 1980s, the incidence of new HIV infections among drug addicts has decreased significantly."

Source

"The Swiss Drug Policy: A fourfold approach with special consideration of the medical prescription of the medical prescription of narcotics," Swiss Federal Office of Public Health (Bern, Switzerland: SFOPH, March 1999), p. 7.