Journal of Urban Health Vol. 88; No. 6: P. 1031-1043 (12..11)
"Research needs to build evidence for the roles that HIV
status of injection partners may or may not play in injection
risk behaviors of injection drug users (IDUs)," the authors
wrote in introducing the current study. Using baseline data
from a randomized controlled study (INSPIRE) in Baltimore,
Miami, New York, and San Francisco, 2001-2005, the team
categorized 759 primarily heterosexual HIV-positive IDUs into
four groups based on the HIV serostatus of injection partners.
Of the sample, 32 percent injected exclusively with HIV-
positive partners in the previous three months, and more than
60 percent had risky injection practices with these partners.
Among the rest, 49 percent injected with any partners of
unknown serostatus; 11 percent reported both HIV-positive and
�negative partners but no partners of unknown serostatus; and
8 percent injected exclusively with HIV-negative partners.
The group with mixed status partners reported riskier
injection behavior. Risk among those with partners of unknown
serostatus appeared driven by the greater number of injecting
partners. No major group differences were noted for
sociodemographic and psychosocial factors.
"Our analysis suggests that serosorting appeared to be
occurring among some, but not an overwhelming majority of HIV-
positive IDUs, and knowledge of HIV status of all injection
partners per se did not appear to be as important as knowledge
of sexual partner's HIV status in its association with risk