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Sex Transm Dis. 2002 Jan;29(1):38-43.

Reducing the risk of sexual HIV transmission: quantifying the per-act risk for HIV on the basis of choice of partner, sex act, and condom use.

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  • 1Division of HIV/AIDS Prevention-Surveillance and Epidemiology, National Center for HIV, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA. bav7@cdc.gov

Abstract

BACKGROUND:

Sexual acquisition of HIV is influenced by choice of partner, sex act, and condom use. However, current risk-reduction strategies focus mainly on condom use.

GOAL:

To estimate the contribution of choice of partner, sex act, and condom use on the per-act relative and absolute risks for HIV infection.

STUDY DESIGN:

Per-act relative risk for HIV infection was calculated with use of estimates of HIV prevalence, risk of condom failure, HIV test accuracy, and per-act risk of HIV transmission for different sex acts. Absolute risks were calculated on the basis of these relative risk estimates.

RESULTS:

Choosing a partner who tested negative instead of an untested partner reduced the relative risk of HIV infection 47-fold; using condoms, 20-fold; and choosing insertive fellatio rather than insertive anal sex, 13-fold. Choosing one risk-reduction behavior substantially reduces absolute risk of HIV infection for heterosexuals but not for men who have sex with men.

CONCLUSION:

Clarifying the magnitude of risk associated with different choices may help people make effective and sustainable changes in behavior.

PMID:
11773877
[PubMed - indexed for MEDLINE]
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