In 2008 it was reported that the incidence of new hiv infections associated with intravenous drug use had declined by 80 percent in the past 20 years. according to the text, which of these factors led to this decrease?

Explanation:

People who use drugs by injection (IDU) are a priority population for HIV prevention, care, treatment and support in BC. HIV infections among IDU have been identified since the beginning of the HIV epidemic in BC, and slowly increased in number during the late 1980s and early 1990s. In 1992, the number of new positive tests in IDU began to increase dramatically, indicating an outbreak of HIV among IDU was underway, rising to a peak in 1994‐1996. While initially centred on IDU living in Vancouver’s Downtown East side (DTES) neighborhood, HIV quickly spread to affect IDU in all parts of the province.

Factors at multiple levels contribute to the HIV epidemic among IDU in BC. At the most immediate level,the likelihood of HIV infection among IDU is related to the exchange of blood through sharing of injection drug use equipment such as syringes and other drug paraphernalia (including pipes used for smoking crack cocaine), and to sexual risk factors for HIV acquisition. At the individual level, mental health issues, including drug dependence, and limited access to harm reduction supplies are key vulnerabilities for HIV infection. At a social and population level, issues such as poverty, homelessness, societal attitudes regarding substance use, access to appropriate health services, and stigma are key determinants of HIV infection in this population. As a result, provincial and regional HIV prevention  control strategies for IDU emphasize the importance of strategies that target determinants at these multiple levels, often under the framework of a blood‐borne pathogens approach (with the objective of reducing both HIV and hepatitis C).

In BC, the provincial response to the epidemic of HIV among IDU has been multi‐pronged and sustained, including

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