The impact of restricted community accessibility on needle and syringe sharing among drug users in Baise city: based on the event study method.

Objective: To investigate the effect of the restricted access to clean needles and syringes on needle and syringe sharing behavior like Human Immunodeficiency Virus (HIV) and Hepatitis C Virus (HCV) amongst the people who inject drugs (PWID) in Baise, Guangxi province of China, and to provide the scientific evidence for formulating public health policies aimed at preventing HIV transmission.

Method: Using the national unified questionnaire and plan, from 2010 to 2019, snowball sampling was conducted among the community drug users under sentinel surveillance in Baise City's county districts every April to June. During face-to-face interviews with each participant, a structured questionnaire was used to collect demographic, behavioral, and venous blood for serological surveillance.