HIV Risk Calculator: Per-Act Transmission Estimator




Exposure TypeEstimated Risk per 10,000 Exposures“1 in X” Probability
Receptive Anal Intercourse1381 in 72
Insertive Anal Intercourse111 in 909
Receptive Vaginal Intercourse81 in 1,250
Insertive Vaginal Intercourse41 in 2,500
Oral Sex (Receiving or Giving)Low to Negligible