______________________________________________________
Since the statistics are reliant on honest answers from the respondents, the numbers are not completely trustworthy. If you include the “straight” men that frequent the gay clubs, bath houses and other locales for completely random gay encounters, the number is likely closer to 90%. IV drug abusers and promiscuous heterosexuals make up the rest. Go to any AIDS treatment center and you'll be amazed at the number of HIV positive men that still claim that they have no idea how they contracted it.
I don't think it's quite that high, as men don't outpace women by that much in total infections, but your point is well taken.
Now, I think it's very likely that these women are being infected by bi-sexual men - mostly black men on the "down low" - the black female infection rate is the second most frequently infected demographic.