Risk of HIV transmission per act by exposure type from an HIV-positive source (5)
| Level | Exposure type | Estimated risk per act, % |
|---|---|---|
| High | Anal (receptive) | 1.38 (1.02–1.86) |
| Needle sharing | 0.63 (0.41–0.92) | |
| Moderate | Anal (insertive) | 0.11 (0.04–0.28) |
| Vaginal (receptive) | 0.08 (0.06–0.11) | |
| Vaginal (insertive) | 0.04 (0.01–0.14) | |
| Low | Oral sex (giving) | Precise estimates not |
| Oral sex (receiving) available | ||
| Oral–anal contact | ||
| Sharing sex toys | ||
| Blood on compromised skin |