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HIV Risk Among Heterosexuals

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NHBS Among Heterosexually Active Persons at Increased Risk for HIV (NHBS-HET)

In Colorado, HIV transmission from heterosexual contact accounts for approximately 10% of newly diagnosed HIV cases. Women are at particular risk for HIV infection due to high-risk heterosexual contact. NHBS-HET collects information on heterosexually active persons at increased risk for HIV reporting sex with an opposite sex partner in the 12 months before interview. NHBS uses low income as a proxy for increased risk for acquiring HIV through heterosexual sex.

Before each NHBS cycle, formative assessment is conducted to learn more about the current status of the population and to inform operational procedures. Respondent-driven sampling (RDS) is used during the HET cycles. A small number of initial participants, or “seeds,” are selected to complete the survey and recruit their peers to participate. Recruitment and referrals then continue until the target sample size is reached.

Trained interviewers in all NHBS project areas use a standardized, anonymous questionnaire to collect information on HIV-related risk behaviors, HIV testing, and the use of HIV prevention services. HIV testing is offered to all participants regardless of their self-reported HIV status. During each cycle, a minimum of 500 eligible persons from each participating project area are interviewed and offered HIV testing.

HET Cycles in Denver

 

HET1
2007

HET2
2010

HET3
2013

HET4
2016

HET5
2019

HET7*
2025

Total completed surveys

760

522

499

407

195

 

Total HIV tests

759

510

496

407

195

 

HIV prevalence

0.5%

1.2%

0.8%

0.7%

0%

 

NOTE: There was no HET cycle in round 6.

Links to Reports