The risk of transmission from male to female is higher than 1 in
2,000, probably closer to 1 in
1,000 in North America
and Europe. It likely is quite a bit higher than that in southern Africa, where more HIV infected people are likely to have higher viral loads, to have other STDs, and to be uncircumcised. In addition, Dr. Hook's and my recommendations on timing of HIV testing depend in part on the level of risk; in a high risk situation like this one, testing out to 3 months makes sense.