Nontobacco substance use, sexual abuse, HIV, and sexually transmitted infection among street children in Kolkata, India.

A community-based cross-sectional study among 554 Kolkata city street children assessed nontobacco substance use and sexual abuses along with human immunodeficiency virus (HIV)/ sexually transmitted infections (STIs) during 2007, using conventional cluster sampling technique for "hard-to-reach population" with a field-tested questionnaire and the collection of a blood sample for HIV and syphilis serology testing as a composite indicator of STIs. The reported prevalence of nontobacco substance use was 30%; 9% reported having been sexually abused. Some factors (age, lack of contact with family, orphan children, night stay at public place, etc.) were documented to be associated with substance use and sexual abuses. Seroprevalence of HIV was found to be 1% and that of STIs was 4%. This 1% HIV seroprevalence in street children is a matter of concern. Community-based intervention is necessary for them. The study's limitations are noted.