Yes, dry sex, sadly, contributes to the menace. FGM, to some extent, allows sex injuries, allowing contaminated blood to spill out. A Nigerian PhD researcher had some extensive data on the research he did for his dissertation and was amazed at the data. Cut men and uncut women contract HIV less than Uncut men and cut women were some of the conclusions he made. Less stressed uncut women are more secure and happier and, as such, squirt more during sex, which minimizes infections/injuries. These could explain why HIV in Kenya is common in certain regions!