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Relative Risk of HIV Acquisition (per sexual act)

for Health Care Providers

Table 3. Relative Risk of HIV Acquisition (per act)

Back to Prevention for Positives Chapter

Risk FactorRelative Risk of Acquisition
* Best-guess estimate
# Referent category

Adapted from Varghese B, Maher JE, Peterman TA, et al. Reducing the risk of sexual transmission: quantifying the per-act risk for HIV infection based on choice of partner, sex act, and condom use. Sex Transm Dis 2002;29:38-43. Also adapted from CDC, HRSA, NIH, and HIVMA. Incorporating HIV Prevention into the Medical Care of Persons Living with HIV. MMWR 2003;52:RR-12.
Sexual Activity (some popular terms)
Insertive fellatio ("getting head, being blown/sucked")*1#
Receptive fellatio ("giving head, blowing/sucking")*2
Insertive vaginal sex10
Insertive anal sex ("topping")13
Receptive vaginal sex20
Receptive anal intercourse ("bottoming")100
Condom Use

From Prevention for Positives
Primary Care of Veterans with HIV
Office of Clinical Public Health Programs
Veterans Health Administration, 2009