Risk of HIV transmission from different types of unprotected sex

Number of individual studies

Range of estimates

Meta-analysis estimate

Receptive anal

4

0.4% - 3.38%

1.4%

Insertive anal

2

0.06% - 0.62%

-

Receptive vaginal

10

0.018% - 0.150%

0.08%

Insertive vaginal

3

0.03% - 0.09%

0.04%