The treatment of patients who are dependent on opiates has definitely
been including drug substitution besides withdrawel and weaning in the
Swiss urban community (''Kanton'') of Basel City since 1980. After a
significant increase of treatments in 1987 in connection with the spre
ad of HIV infections, more than 800 patients were presently receiving
substitution treatment according to a descentralised schedule. The typ
e of long-term treatment is illustrated by sociodemographic and treatm
ent data of 500 substituted individuals who are mostly being looked af
ter always by the same persons entrusted with caring for them. This re
presents a flexible, economically feasible and highly individual type
of care and treatment that can help to reduce illegal drug consumption
and hence the undesirable events associated with it in an urban distr
ict such as Basel city.